Underdark Encounter Tables

VGtM = Volo's Guide to Monsters. Underdark Encounters (Levels 11+) MToF = Mordenkainen's Tome of Foes d8+d12 Underdark Encounters (Levels 1-4) 2 1 death tyrant or 1 mind flayer lich (VGtM) d8+d12 3 1d4+1 cloakers or 1 sibriex (MToF) 2 1 intellect devourer as host in a drow or 1d2 nothics 4 2d4 umber hulks or 1 fire giant dreadnought with 1d2 fire giants 3 2d4 grimlocks or roll on Humanoid Encounters 5 1d2 drow mages with 1d4 xorns or roll on Drow Encounters lvl 11+ 4 1d3 gargoyles or roll on Planar Creatures lvl 1-4 6 2d4 salamanders or 1 fire giant dreadnought 5 1d2 grells or roll on Underdark Monsters lvl 1-4 7 1d3 aboleth with 1d4 chuul or 1 soul monger (MToF) 6 2d4 drow with 1d4 goblin slaves or 2d4 deep gnomes 8 1 beholder or 1d4+1 howlers (MToF) 7 1d3 carrion crawlers or roll on Underdark Monsters lvl 1-4 9 1d3+1 fomorians or 1 devourer (VGtM) 8 2d6 kuo-toa led by a kuo-toa whip or roll on Humanoid Encounters 1 drow priestess of Lolth with 1d2 yochlols or roll on Drow 10 9 1d6+1 darkmantles or roll on Underdark Monsters lvl 1-4 Encounters lvl 11+ 11 Roll on Underdark Levels 5-10 or 1 neothelid (VGtM) 10 2d6 troglodytes or roll on Humanoid Encounters 11 1d4 giant bats and 1 swarm of bats or roll on Underdark Beasts 12 1 purple worm or 1 spirit troll (MToF) 12 1d6 gas spores or roll on Fungi and Ooze Encounters 13 2d4 stone giants or 1 blackguard (VGtM) with 1d3 driders 1d3 mind flayers and 1 mind flayer arcanist or 1 duergar despot 13 2d6 giant fire beetles or roll on Underdark Beasts 14 (MToF) with 2d6 duergar stone guards (MToF) 14 1d3 quaggoths or 2d6 flumphs 15 1 dao with 1d3 earth elementals or 1 yuan-ti anathema (VGtM) 15 2d4+2 giant centipedes or roll on Underdark Beasts 16 1 behir or 1 gloom weaver (MToF) and 1d2 shadow dancers (MToF) 16 1d3 minotaur skeletons or roll on Undead Encounters lvl 1-4 17 2d4 xorns or 1d4 of the hungry (MToF) 17 1d4 giant spiders or roll on Underdark Beasts 18 1d4+1 fire giants or 1 skull lord (MToF) 18 1d3 duergar and 1d3 orc slaves or roll on Duergar & Deep Gnomes 19 1 beholder and 2d4 duergar or 1 dire troll (MToF) 2d4 myconid sprouts and 1d4 myconid adults or roll on Fungi and 19 Ooze Encounters 20 1 young red shadow dragon or 1 nightwalker (MToF) 20 1 beholder zombie or 1 roper Underdark Encounters (Levels 5-10)

d8+d12 2 1 spirit naga or roll on Underdark Monsters lvl 5-10 3 1d2 yuan-ti abominations or roll on Yuan-ti lvl 5-10 4 2d4 hook horrors or roll on Underdark Monsters lvl 5-10 5 1d4 salamanders or roll on Planar Encounters lvl 5-10 6 1d4+1 chuuls or roll on Underdark Monsters lvl 5-10 1d3 driders and 2d6 giant spiders or 2d4 duergar kavalrachni (MToF) 7 on steeders (MToF) 8 1d4 umber hulks or roll on Underdark Monsters lvl 5-10 9 1d4+2 quaggoths led by a quaggoth thonot or 1 elder oblex (MToF) 10 1d2 ropers with 2d4 piercers or roll on Underdark Monsters lvl 5-10 11 Roll on Underdark Levels 1-4 or 1 deathkiss (VGtM) 12 1 fomorian or roll on Underdark Giants lvl 5-10 13 1 drow mage with 2d6 drow or roll on Drow Encounters lvl 5-10 14 1d2 mind flayers and 2d6 quaggoths or roll on Mind Flayers lvl 5-10 1 aboleth with 2d4 kuo-toa or 2d4+2 chitines (VGtM) led by 1 15 choldrith (VGtM) 16 1d4 drow elite warriors or roll on Drow Encounters lvl 5-10 17 1 beholder zombie and 2d4 ogre zombies or roll on Undead lvl 5-10 18 1d3 stone giants or roll on Underdark Giants lvl 5-10 19 Sample3d6 orcs led by 1d2 minotaurs or roll on Orc Encounters lvl 5-10 file 3d6 kuo-toa and 1d4 kuo-toa whips led by 1 kuo-toa archpriest or 20 2d4 duergar led by a duergar warlord (MToF)

2 Location Tables Underdark Semi-Civilized Locations In italics are optional extra details. Use Wilderness, Semi-Civilized or Unusual table for an encounter location. d8+d12 A crystal walkway to an inscribed stalactite. There is a garden of pink The Underdark Location Detail and Underdark Combat 2 Terrain can be used to customize the location. edible fungal (nearby is the fresh corpse of a giant) A vaulted temple to a power of earth surrounded by quartz (there 3 are troll tracks less than an hour old) A stone bridge covered in phosphorescent edible mushrooms Underdark Wilderness Locations 4 In italics are optional extra details. (colourful lights appear at random) A portal by a deep hole. It is linked to the lower planes. (nearby is a 5 d8+d12 recent collapse) A pool with a garden of glowing mushrooms with stone-like caps A flint quarry in a cave with large stalactites (close by is a ferry over 2 6 (the area is blessed by a power of good fortune) a fish-filled river) A mine shaft and a recently disturbed cairn. (there is a strong odour 3 A wide gorge. There is a noisy waterfall (by a large statue) 7 covering the area) 4 A carved stairway leading to a tomb. (nearby is a sparkling stream) A set of ornate steps cut into a cliff-face carved with grotesque A pool with a patch of decaying mold and a garden of moldy gourd- 8 5 faces. (there is the corpse of a cloaker) like fungal fruit. (someone has left an interesting rock) An area of rock-strewn ground with a small beast pen (a collapse A cave covered with inscriptions (close to an area of 9 6 could easily happen) bioluminescent green moss) A strange carved hall with a garden of red edible fungal stalks 7 A pale red-fruited "tree" (nearby is the fresh corpse of a giant bat) 10 (nearby is a patch of black edible puffball mushrooms) A crystal walkway leading up a cliff and a wide hole (there is a cloud 8 A marble well in a patch of massive mushrooms with grain-like of blueish spores) 11 spores (fireflies are in the area, glowing yellowish-green) A clear pond and a patch of pulsating moss. (close by is a large fish- 9 A sheltered stalagmite house with a covered hole (there are bones filled pool fed by a spring) 12 of a goblin) A tunnel-ridden cave with large stalagmite (close by is a bulky slab 10 13 A shrine to a power of loss. (lying here is a backpack) of obsidian) A burial chamber and three tall mushrooms (nearby is a strange A vertical shaft surrounded by moss (there are dark elf tracks less 14 11 portal) than a day old) An inscribed stone slab and an insect-covered shrine to a forgotten 12 An area of fungal flowers. (there is a sweet odour in the air) 15 power (there is writing here in Terran) A set of stone steps leading up a cliff. There is a patch of spiky An area of green stones. There is a pillar covered in runes. (there is a 13 mushrooms covered in a tar-like substance (glowing beetles cover 16 programmed illusion here) the area) A cursed area of creepy catacombs (there is a body on a spear 14 A deep ravine (there is an inscription here in Dwarven) 17 marking a boundary) A pile of rocks by a patch of fiery-looking moss (near a stream 15 A farm of dark edible puffball mushrooms (there is a cloud of flowing into a river) 18 greenish dust) A field of stones of varying sizes (there are several purple-cap 16 A strange crystal lattice and a newly-built shrine to a power of mushrooms studded with large holes) 19 madness (the area is touched by the feywild) A shale walkway leading up a steep slope with a muddy stream fed 17 A floating marble slab and a decorated tomb (close by are several by a spring (a partial collapse could easily happen) 20 sandstone columns) A spring by a pool with a few twisted magic-feeding trees (it is 18 touched by dark elf magic) A glowing waterfall with a A forest of purple edible mushrooms 19 (there is a strong air current here) A wide chasm. There is a glowing crystal structure (which is 20 associated with necromantic magic) Sample file

3 Underdark Unusual Locations Underdark Location Detail

d8+d12 Minor details to add to other locations A maze through a thick forest of fungi, mushrooms, oozes and 2 insects. It is tended by an immortal minotaur who avoids fights. d8+d12 Stalagmites and stalactites dominate a cave of many exits. Several 2 Bone shrine to deity of darkness 3 are hollow and many bear carvings. Flumphs are attracted here. 3 Several large toppled mushrooms The Mirror Above. An obsidian slab hangs from chains in an ancient 4 A carved map 4 carved hall. Periodically the slab shows images from the surface. 5 A tentacled statue Broken weapons and pieces of armor mark recent battles. 6 A red and green mosaic of a battle A noisy waterfall descends into a lake of clear water. On an island 5 Plentiful ear-like edible fungi or there is an air current flowing covered in glowing green mushrooms is a portal to the surface. 7 through the area An air current flows into this high cave. Strands and ribbons of a 6 white lichen float about. There is a shrine of travel hidden high up. 8 Angry graffiti in Undercommon A canyon with walls glowing in patterns of green, blue and red. Light 9 A pit of sand or there is a foul stench covering the area 7 is from fungi, fireflies and decorations placed by a dark elf artisan. 10 A set of stone shelves The Forbidden Stairs. A long crystal stairway marked with statues of 11 A metal lever 8 different underdark races. It is in the area of a forbiddance spell. 12 Bones and carapace of an umber hulk Bats infest this cave, their droppings covering an ancient obsidian 13 A stone seat or ash covers the area 9 arch. Water runs down it from an overflowing pool on a ledge above. 14 Numerous fireflies 15 Pile of colored stones Several fetid pools contain various slimes and bubbling liquids. A 10 highly intelligent roper hides among several large stalagmites. 16 Bloated lizard corpse covered in fungi The numerous beetles here live in symbiosis with several tall purple 17 A small tended mushroom garden 11 mushrooms. They are unaffected by the drifting poisonous spores. 18 Pictures depicting a saga Market Canyon Staircases and many chambers are cut into this wide 12 19 Stalactites carved with faces canyon. Merchants often trade here the protection of a beholder. 20 A permanent teleportation circle A fungal bridge crosses a trench of acidic sludge. Other bright fungi 13 grow rampantly through connected caves, lit by a strange aura. Underdark Combat Terrain At the bottom of a wide pit rocks creak and shift. Occasionally 14 This terrain provides obstacles and things to use in combat. geysers scatter stones and metal chunks through the area.

Rows of tended fungi grow in circles around a tentacled statue. It d8+d12 15 glimmers from magic it drains from the surrounding area. 2 A set of levers connected to six stone doors Dread Falls A waterfall plunges into treacherous rapids. Several altars 16 3 A beast pen holding giant lizards (or deep rothe - VGtM) of metal and crystal float in the waters. Fiends watch this place. 4 A partial collapse waiting to happen Magic courses through these crystal caves. Spells cast resonate 17 loudly and attract psionic entities. The Astral plane overlaps here. 5 A water geyser repeating frequently Wiry metallic vines span a dry gorge. Spider-like creatures spin them 6 Minecart tracks and a minecart 18 into mesmerizing patterns. Demonic symbols are marked in blood. Covered simple pit (DMG pg 122) or roll on Underdark Hazards & 7 A bronze chain marks a ford through a sparkling river. Anything Obstacles 19 entering the river sparkles with dim light for 1d4 hours afterwards. 8 A platform moved by levers Outcast Citadel A fort is built into several towering stalagmites. A 9 Large sharp stalagmites 20 crystal walkway runs around the edge of the surrounding cavern. 10 An uncovered pit of water (or acid). 11 A wide set of spiral stone steps 12 A secret door or a stalactite ready to fall 13 A cracked crystal structure ready to shatter 14 A chute with a flimsy covering or there is a cloud of reddish spores 15 A rope ladder 16 A spiderweb covered hole to a watery cavern 17 An electrified metal door 18 Tough spiky wiry fungi (treat as spike stones) 19 A crude raft on a lake shore Sample20 A line of iron bells on ch ains file

4 Beasts & Humanoids Underdark Mounts For medium-size npcs & leaders, with options for other sizes. These tables can be used as alternative Underdark encounter tables d4+d6 Beast Encounters (Levels 1-4) 2 nightmare 3 giant toad or grick d8+d12 4 carrion crawler or rust monster 2 1 mimic 5 giant bat or deep rothe (cow stats; VGtM) 3 1d2+1 giant poisonous snakes 6 giant lizard or female steeder (MToF) 4 1 giant constrictor snake or 1 swarm of rot grubs (VGtM) 7 giant spider 5 3d6 giant rats or 1 Gazer (VGtM) 8 cave bear or male steeder (MToF) 6 2d6 stirges or 1 female steeder (MToF) & 1d4 male steeders (MToF) 9 skeletal warhorse 7 2d4+2 giant centipedes 10 rothe (giant goat stats) or phase spider 8 2d4 giant bats 9 1d2 bat swarms Humanoid Encounters (Levels 1-4) 10 2d4 rothe (giant goat stats) d8+d12 11 2d6 giant fire beetles or 1 cave fisher (VGtM) 2 1 intellect devourer in a host... (roll again on table) or 1d4 half-ogres 12 2d4 giant lizards or 2d4 deep rothe (VGtM, Cow) 3 1d4+1 bugbears or 2d6 goblins led by a nilbog (VGtM) 13 1d4 giant spiders or 1 choker (MToF) 1d2 scouts with... (roll on Underdark Beasts) or 1d2+1 duergar with 4 14 1d4+1 darkmantles 1 duergar stone guard (MToF) 15 1d4 giant toads or 1d2 guard drakes (VGtM) 5 1d4+1 orcs led by an orog or roll on Orc Encounters lvl 1-4 16 1d2 insect swarms 1d3 quaggoths or 2d6 xvarts (VGtM) led by a xvart warlock of 6 17 1d2 carrion crawler or 2d6+6 young kruthiks (MToF) Raxivort (VGtM) 18 1d3 rust monsters 7 1d6 kobolds with a pet carrion crawler or roll on Kobold Encounters 19 1d2 giant bats and 1d2 bat swarms 8 2d6 escaped commoner slaves or roll on Underdark Slaves 20 1d2 cave bears or 1 swarm of cranium rats (VGtM) 9 1d4 duergar or roll on Duergar and Deep Gnomes 10 1d4 kuo-toa led by 1 kuo-toa monitor or 1d3 ogres 11 2d4 drow with... (roll on Underdark Slaves) or 2d4 chitines (VGtM) 2d6 grimlocks or 1d4 darklings (VGtM) led by 1 darkling elder 12 (VGtM) 2d6 troglodytes or 1d3 firenewts (VGtM) mounted on giant striders 13 (VGtM) 14 2d4 deep gnomes or roll on Duergar and Deep Gnomes 2d6 goblins led by a goblin boss or 1d4+1 firenewts (VGtM) led by a 15 firenewt warlock of Imix 16 1d2 yuan-ti malisons or roll on Yuan-ti Encounters lvl 1-5 17 1d3+1 hobgoblins led by a hobgoblin captain or 2d6 derro (MToF) 18 2d4 tribal warriors led by a veteran or 2d4 skulks (MToF) 19 1 druid with 1d2 giant lizards or 1 meazel (MToF) 20 1 doppelganger among... (roll again on table) or 2d4 boggles (VGtM)

Underdark Character Races Use this table for tribal warriors, scouts and other NPCs

d4+d6 2 Rock gnome 3 Tiefling 4 Dragonborn (any) or shadar-Kai (MToF) 5 Mountain dwarf 6 Dark elf (drow) Sample7 Half-orc or orc (VGt M) file 8 Half-elf (drow) or yuan-ti (VGtM) 9 Human or kobold (VGtM) 10 Stout halfling

5 Non-Combat Encounters Underdark Non-Combat Creatures Quick Underdark NPCs

Most encounters below retreat, hide or surrender in combat. d4+d6 Azaki is an outcast drow elite warrior who is practicing coin tricks. d8+d12 2 They are proud of coin collection and will work for new specimens. A drider spellcaster merchant has maps (or potent fungi) for sale. 2 Cressel is an old tiefling veteran with a style blending several cultures. Makes good offers for loot of characters and can trade in favors 3 They guard surface visitors and recognize one of the characters. An unhappy wereboar is lost and wounded from fights with local 3 Sheris is a hermit mage (or diviner - VGtM) with a gemstone circlet. creatures. Talks about wild parties in the moonlight. 4 They experiment with fungi in arcane rituals and speak of many lands. An eyeless beholder is chained to a cliff and used as an oracle by 4 Duergath is a curious dwarf scout with a bat familiar. They make maps local tribes. Speaks several languages and talks of far off realms. 5 to add to their collection or trade away. Dream of owning an island. A doppelganger in goblin form wants to pick delicious mushrooms. 5 Aym is a gaunt tribal warrior with unruly orange hair. They have They are surrounded by deadly fungi that emit poisonous spores. 6 escaped captivity twice and give advice on surviving the Underdark. 6 A pair of otyughs look for a new home. Dark, toxic and waste-filled. Riggles is a thickset deep gnome miner with a handcart. They have an 7 A stone giant has lost their affinity with stone. Trying to develop a acute sense of smell and use it to find gems, ore and lost items. 7 new affinity with objects, experimenting with bones, metal and fur. Xenia is a lucky half-ogre (or bard - VGtM) who speaks Giant, A sentient ochre jelly (Int 12, telepathy 60 ft.) communicates mostly 8 Common, Undercommon and five more languages. They are valued as 8 in images. It proposes an alliance of mutual protection. a translator and have a knack for surviving dangerous situations. 9 A few ragged duergar are starving and downcast. Will work for food. Oloric is a missionary priest of light from the surface. They hope to 9 An intellect devourer is inhabiting the body of a deep gnome and convert creatures and carry many different sources of light. 10 claims to be the ambassador of a nearby settlement. Eri is a loud ogre (spellcasting of a druid) berating a pet yellow slime. 10 A few myconid adults are cut off from their cave of enchanted fungi. They taste any unknown substances and love to talk about oozes. 11 Offer great rewards in return for helping them return there. A friendly minotaur (speaks Undercommon) has spent years building Underdark Hazards and Obstacles 12 a puzzle maze and wants someone to try it out and give feedback. Encounters to hinder, threaten or inconvenience the An awakened bat (speaks Undercommon) offers to guide group and characters. Option to combine with a creature encounter. 13 scout for them. Wants to be a familiar and hear tales of the surface. d8+d12 A distraught ettin has had one head drained by intellect devourer 14 (Int 0) and asks for help. Collapses in tears if refused or attacked. 2 An old shrine (or cairn) that can cause a geas (or bestow curse) Several cautious lizardfolk escaped captivity from slavers and are 3 Area of dead magic (as antimagic field) caused by weird fungi 15 trying to make sense of the Underdark. Considering living here. 4 There is smoke from a fire or a few beasts are infected with disease A grick alpha with an ornate collar is heavily wounded and retreats 5 A hedge (or maze) of spiky fungi (treat as razorvine; DMG pg 110) 16 from any light. Pet of nearby creature, who is grateful for its return. 6 There is an area of sharp stones (treat as spike stones) 17 Several deep gnome miners try to rescue an ore cart from a collapse. 7 An area of fungal spores that cause scary visions (or madness) A fire giant has a mobile forge and offers to make repairs or items. 18 An area of thick webs (DMG pg 105) or there are tremors causing Will trade for metal and has a friendly sidekick who talks to party 8 falling rocks or stalactites) A docile purple worm has a magical carrying box fused with it (space 19 9 Poisonous (or disease-carrying) spores cover (or float in) the area for six Medium sized creatures). It waits expectantly for group. 10 There is risk of a rockfall (or collapsing roof) (DMG pg 110) A strange shadow reforms when destroyed and slowly drains light 20 A patch of Brown (or Yellow) Mold (DMG pg 105) or there is instead of life. Is very confused and glows like a driftglobe. 11 glowing swarm of harmless insects in the area 12 Covered simple pit (DMG pg 122) or locking pit trap (DMG pg 122) 13 There are several shriekers among similar looking fungi There is a strange mist (or it is very dusty) in the area. Treat as light 14 or heavy obscurement. Tracks lead to an area of quicksand (DMG pg 110) or Swarm of Rot 15 Grubs (VGtM) infesting a corpse 16 A disturbance of many bats (or stampede of rothe) There is a pocket of flammable gas or there are tar pits (as 17 quicksand but flammable) A rolling sphere trap (DMG pg 123) or sphere of annihilation (DMG 18 Samplepg 122) file 19 An earthquake causing fissures, rockfalls and tunnel collapses. 20 There is a flash flood or a portal to one of the elemental planes

6 Underdark Objects and Treasures Underdark Mundane Items Underdark Magic Items (d20)

Discarded objects, impromptu loot or extra NPC equipment Use 1d8 for Uncommon items, 1d8+8 for Rare, 1d4+16 for Very Rare & Legendary d8+d12 d20 2 a glowing rock or a coil of silk rope 3 a potted mushroom 1 Helm of Telepathy or Immovable Rod 2 Gem of Brightness or Medallion of Thoughts 4 a pair of manacles or a drum 3 Wand of Web or Ring of Mind Shielding 5 a keg of mushroom ale 4 Slippers of Sider Climbing or Goggles of Night 6 a quiver of drow bolts or a a metal bucket Bag of Tricks - Caves (1d8: 1. rat; 2. giant centipede; 3. giant fire beetle; 7 a snapped-off lever 5 4. stirge; 5. giant bat; 6. giant lizard; 7. giant spider; 8. cave bear) 8 a smashed lantern or bundle of rags 6 Lantern of Revealing or Rope of Climbing 9 a sack of edible mushrooms 7 Wand of Secrets or Necklace of Adaptation 10 an empty water flask or a piton 8 Adamantine Armor or Driftglobe 11 a rusty pickaxe 9 Boots of Levitation or Tentacle Rod 12 a half-burnt torch or an oil flask 10 Stone of Controlling Earth Elementals or Sun Blade 13 a length of knotted rope 11 Ring of X-Ray Vision or Dagger of Venom 14 a weirdly colored rock or a bone dagger 12 Robe of Eyes or Mantle of Spell Resistance 15 a half-finished map of the area 13 Cloak of the Bat or Rope of Entanglement 16 a spade or a lamp 14 Ring of Feather Falling or Periapt of Proof against Poison 17 a glass vial 15 Horn of Blasting or Dimensional Shackles 18 a grappling hook or a broken mirror 16 Gem of Seeing or Portable Hole 19 a flint axe 17 Helm of Brilliance or Demon Armor (cursed) 20 a climber's kit or roll on Minor Treasures 18 Sword of Sharpness or Cloak of Arachnida Underdark Minor Treasures 19 Dwarven Plate or Ring of Elemental Command (Earth) - legendary 20 Rod of Alertness or Talisman of Ultimate Evil - legendary d8+d12 2 1 dose of purple worm poison or 1d3 doses of burnt other fumes 3 Potion of Mind Reading or Oil of Etherealness A pair of silver coated pickaxes with handles covered cloaker hide. 4 Worth 300 gp each 5 Dust of Disappearance or Dust of Sneezing and Choking 6 1d3 doses of drow poison (or carrion crawler mucus) 7 Potion of Water Breathing or Potion of Gaseous Form 8 Poisoner's kit or alchemist's supplies 9 Scroll of Protection - Aberrations or Undead 10 1d2 vials of acid or thieves' tools 11 1d4 Potions of Climbing or Potion of Poison 12 Mason's tools or a climber's kit Spell Scroll of meld into stone; or an amulet with a continual flame 13 spell 14 A silver spider and a bronze serpent wrapped around it worth 75 gp 15 Staff of the Python or Potion of Clairvoyance 16 1d4 small rubies in a green bottle. Worth 100 gp each. 17 Spell Scroll of passwall (or wall of stone) 18 A map showing a route to the surface or to a planar portal 19 Elemental Gem (earth) SampleAn exquisite set of playing cards depicting various Underdark file 20 denizens. Worth 1000 gp

7 Activities & Complications d8+d12 2 One or more are close to death or close to giving birth They are fleeing a nearby danger, disaster or other threat or they are 3 waiting for someone / something They are exploring (or watching) a secret entrance or cleaning / 4 washing themselves 5 They are investigating a dead body (roll on Quick Underdark NPCs) One or more (or their companions) are trapped in a rockfall (or in a 6 hole) They are hiding from (or curious about) a nearby light source or one 7 of them is telepathic (telepathy 60 ft.) 8 One or more of them is cursed (or infected with a disease) 9 They are hiding from (or watching) a nearby threat They are being noisy or one of them is larger than normal (extra hit 10 points) Encounter Complication or Enhancement 11 They are resting or eating One or more of them is mounted on an something with a 12 They are exploring the area or they guard the local area mount They are drinking (or collecting) from a water source or they have 13 young with them d8+d12 14 They are searching the area for sustenance or a companion There is a second group of creatures nearby (roll again on the 2 They are stalking (or being stalked by) something or one of them is appropriate encounter table) 15 a shapechanger There is a crossing to the Shadowfell here or there is a planar portal 3 They are investigating (or playing with) an item (roll on Underdark / magic circle here 16 Mundane Items or Underdark Minor Treasures) There is a hidden item or cache here. Roll on Minor Underdark 4 17 One or more are injured (not at full hit points or reduced speed) Treasures 18 One of them is mutilated (or mutated) in some way Something lurks nearby - 1d3 gray oozes (or roll on Fungi and 5 Oozes) 19 They are investigating (or consuming) an unusual type of fungi There is a chute with a flimsy covering or roll on Underdark Combat 20 They are haunted (or harassed) by another creature 6 Terrain Nearby is a powerful creature those encountered try not to disturb. Underdark Encounter Sentient Activity 7 Roll or pick a result from Underdark Encounters Level 11+ Other option for humanoids or other sentient creatures. There is a cracked crystal structure ready to shatter or roll on 8 Underdark Combat Terrain d8+d12 The creatures are carrying a magic item or it is hidden nearby. Roll 9 2 They are performing a ritual or one or more are telling a story on Magic Items - Underdark 3 They are studying inscriptions (or pictures) or creating some art There are minecart tracks and a minecart or roll on Underdark 10 4 They are searching for secret doors (or traps) or studying a portal Combat Terrain They are having an argument or they are intoxicated on a fungal (or There is a subterranean river (or lake) here and a raft (or other 5 11 mushroom) brew watercraft) 6 They are creating some art or they are carving on tunnels There is a secret door (or chute) here. It leads to a place safe to rest 12 with food and water. 7 They are waiting in ambush for someone or playing with a pet There is an area of Brown Mold or roll on Underdark Hazards and 8 They are following a guide or having a celebration 13 Obstacles 9 They are foraging for sustenance (or fungi) There is a prisoners (or slaves) in the encounter (or hiding nearby). 10 They are digging (or blocking up) a tunnel or they are tending fungi 14 Roll on Underdark Slaves 11 They are lost or they are on patrol There is an area of sharp stones (treat as spike stones) or roll on 15 12 They are making (or following) a map Underdark Hazards and Obstacles 13 They are partway through (or starting) a journey 16 There is a hallucinatory terrain (or progammed illusion) spell here 14 They are preparing or consuming food or they are playing a game There is a pocket of flammable gas or roll on Underdark Hazards 17 15 They are building (or rearming) a trap or they are searching for ore and Obstacles 16 They are mining or they are hunting a beast 18 The area is affected by a mirage arcana (or hallow) spell There are beasts as pets / guards (or nearby). Roll on Underdark 17 SampleThey are talking with someone (roll on Quick Underdark NPCs) 19 file Beasts 18 They are searching for a person or place Area is cursed by a deity or spirit. It is Desecrated Ground (DMG pg 19 They are searching for the party or other adventurers 20 110). An undead may be lurking (roll on an Undead Encounter table) 20 They are making a raft (or other watercraft)

8 Other Encouter Tables Drow Encounters (Levels 5-10) d4+d6 2 1 drider spellcaster or 1 drow shadowblade (MToF) 3 2d4 drow with 2d6 giant spiders 4 1 drow mage with 1d4 drow 5 2d4 drow led by 1 drow elite warrior 6 1d3 driders or 1 drow house captain (MToF) with 2d4 drow 7 1d4 drow elite warriors or 1 draegloth (VGtM) with 1d6 drow 8 1 drow priestess of Lolth with 1d4 drow Fungi and Ooze Encounters (Levels 1-4) 9 1d6 drow and 1d2 drow elite warriors with... (roll on Underdark Slaves) d4+d6 10 1 drow mage and 1d2 drow elite warriors 2 1 black pudding or 1 adult oblex (MToF) 3 1 ochre jelly Drow Encounters (Levels 11+) 4 1d3 gray oozes 5 1d3 shrieker or 1 slithering tracker (VGtM) d4+d6 6 2d6 gas spores 1 drow mage and 1 drow priestess of Lolth with 1d4 fire giant slaves or 2 1d2 drow shadowblades (MToF) with 1d6 shadow demons 7 2d6 violet fungi or 2d4 oblex spawn (MToF) 3 1 yochlol with 1d3 drow elite warriors mounted on driders 8 2d4 myconid sprouts and 1d4 myconid adults 1d2 drow priestesses of Lolth with 1d6+1 shadow demons or 1 drow 9 1 gelatinous cube 4 house captain (MToF) with 1d6 drow elite warriors 10 1d4 myconid adults and 1d2 quaggoth spore servants 1d4+2 drow elite warriors on phase spiders or 1d3 drow shadowblades 5 (MToF) Kobold Encounters (Levels 1-4) 6 1 drow priestess of Lolth with 2d4 drow elite warriors Replace kobold beast allies by rolling on Underdark Beasts 1d2 drow mages with 1d4 earth elementals or 1 drow inquisitor 7 (MToF) with 1d4 drow elite warriors d4+d6 1d4 elite drow warriors with 1 fomorian slave or 1 drow 8 2d4 winged kobolds and 1d2 giant bats or 2d4 winged kobolds led by arachnomander (MToF) with 2d6 giant spiders 2 1 kobold scale sorcerer (VGtM) 9 1d4+1 driders and 1d2 chasme demons led by 1 drider spellcaster 2d6 kobolds and 1d4+1 winged kobolds or 1d4+1 kobold inventors 1 drow priestess of Lolth with 1d3 yochlols or 1 drow favored consort 3 10 (VGtM) with 1d4 rust monsters (MToF) with 1d4 drow elite warriors 2d4+2 kobolds with 1d6 mantraps or 2d6 kobolds led by 1 kobold 4 scale sorcerer (VGtM) Duergar and Deep Gnomes (Levels 1-4) 5 2d4 winged kobolds or 2d6 kobolds with 1 guard drake (VGtM) 6 3d6 kobolds or 2d6 kobolds led by 1 kobold dragonshield (VGtM) d4+d6 7 2d6 kobolds with 1 giant toad or 4 kobolds on ogre howdah (MToF) 1 duergar with 1 minotaur slave or 1 duergar hammerer (MToF) with 2 8 1d4+1 kobolds with 1d3 giant toads 1d2 duergar 2d6+2 kobolds with 1d4+1 giant centipedes in a cage or 2d4 kobolds 1d2 duergar with 1 ogre carrying empty cages or 1 duergar screamer 9 3 and 1d4 kobold inventors (VGtM) (MToF) 10 1d6+1 kobolds led by 1 ogre or 1d4+1 kobold dragonshields (VGtM) 1d2 duergar mounted on giant lizards or 1d2 duergar hammerers 4 (MToF) 5 1d4 duergar or 1 duergar xarrorn (MToF) with 1d2 duergar Mind Flayer Encounters (Levels 5-10) 1d4+1 deep gnomes or 1 duergar stone guard (MToF) with 1d2 d4+d6 6 duergar 2 1d4+4 intellect devourers inhabiting...(roll on Underdark Slaves) 1d4+1 duergar with... (roll on Underdark Slaves) or 1d4 duergar led by 7 3 1d2 mind flayers with 1d4 troglodytes 1 duergar soulblade (MToF) 4 1d3 mind flayers with... (roll on Underdark Slaves) 1d3 deep gnomes with 1d3 gargoyles or 1d2 duergar mind masters 8 1 mind flayer and 2d6 quaggoths or 1 mindwitness (VGtM) with 1d2 (MToF) 5 mind flayers 9 1d3+1 duergar with 1d4 orc slaves 6 1 mind flayer with 2d4 grimlocks 1 deep gnome with 1 xorn or 1d2 duergar kavalrachni (MToF) 10 Sample file 7 1 mind flayer arcanist or 1 ulitharid (VGtM) with 2d4 bugbear slaves mounted on female steeders (MToF) 8 1 mind flayer and 1d3 intellect devourers or 1 alhoon (VGtM) 9 1 mind flayer with 1d6 ogres 10 1 mind flayer arcanist with... (roll on Underdark Slaves)

9 Orc Encounters (Levels 1-4) Planar Creatures (Levels 5-10) d4+d6 d4+d6 1d2+1 orcs led by 1 orc war chief or 1d4 Orc Nurtured Ones of 2 1 dao or 1d3 armanites (MToF) 2 Yurtrus (VGtM) led by 1 Orc Hand of Yurtrus (VGtM) 3 2d4 gargoyles and 1 xorn or 1d2 howlers (MToF) 1d3 orcs with 1 orog and 1 orc eye of Gruumsh; or 1d2 orcs led by 1 3 4 2d4 hell hounds or 1d2 canoloths (MToF) orc blade of Ilneval (VGtM) 5 1d4 earth elementals or 1d4 fire elementals or 2d4 flail snails (VGtM) 1d3 orcs with 1 ogre or 1 Orc red fang of Shargaas (VGtM) mounted 4 6 1d4 xorns or 1 warlock of the fiend (VGtM) with 1d3 babaus (VGTM) on a giant bat 7 1d4 salamanders or 1d3 dhergoloths (MToF) 1d4 orcs led by 1 orc eye of Gruumsh or 1 orog mounted on a phase 5 spider 8 1d4+1 shadow demons or 1 orthon (MToF) 6 1d6+1 orcs or 1d6 orcs with 1 orc nurtured one of Yurtrus (VGtM) 9 1 salamander with 1d4+2 fire snakes and 1d4 hell hounds 1d4+1 orcs led by 1 orog or 1d4+1 orcs with 1 orc claw of Luthic 10 1 yochlol or 1 alkilith (MToF) 7 (VGtM) 1d4+1 orcs with 1d4 commoner slaves or 1d2 orc red fangs of 8 Undead (Levels 1-4) Shargaas (VGtM) d4+d6 1 orc eye of Gruumsh served by 1 orc or 1 orc claw of Luthic (VGtM) 9 with 1 cave bear 2 1 wraith 10 1 orc war chief mounted on a giant bat or 1 tanarukk (VGtM) 3 1 flameskull or 1d2 vampiric mists (MToF) 4 1 wight and 1d6 zombies Orc Encounters (Levels 5-10) 5 1d4 specters or 1d3 ghasts 6 1d4+1 shadows or 1d2 wights d4+d6 7 1d4+1 ghouls or 2d6 of the wretched (MToF) 2 1 orc war chief and 1d4+1 orogs all mounted on giant lizards 8 1d3 minotaur skeletons 2d4+2 ogrillons (half-ogres) with 1 orc eye of Gruumsh and 1 troll or 3 2d4 orc red fangs of Shargaas (VGtM) 9 1 ghost or 1 spawn of Kyuss (VGtM) 4 2d4 orcs with 1d2 trolls or 3d4 orcs with 2d4 aurochs (VGtM) 10 1 beholder zombie or 1 vampire spawn 2d6+2 orcs with 1d4 ogres or 1d6+2 orcs with 2d6 orc nurtured ones 5 of Yurtrus (VGtM) led by 1d3 orc hands of Yurtrus (VGtM) Undead (Levels 5-10)

6 4d6 orcs or 3d6 orcs led by 1 tanarukk (VGtM) d4+d6 2d6+2 orcs led by 2 orogs or 2d6 orcs with 1d2 orogs led by 1 orc 7 2 1 wraith with 2d6 shadows or 1 of the hungry (MToF) blade of Ilneval (VGtM) 3 1d4 vampire spawn 3d6 orcs led by 1 ettin or 2d6 orcs with 1d2 orc claws of Luthic 8 4 1 wraith with 2d4 specters or 1d3 bodaks (VGtM) (VGtM) and 1d3+1 cave bears 5 2d6 ghouls led by 1d4 ghasts or 1d3 of the lost 1d3 orc eyes of Gruumsh with 2d4 orcs and 1d3 ogres or 2d6 orcs 9 led by 1 orc blade of Ilneval (VGtM) with 1d2 orc eyes of Gruumsh 6 1 beholder zombie and 1d6 ogre zombies 2d6 orcs with 1 orc war chief and 1 orc eye of Gruumsh or 1d6+6 orcs 7 1d2 flameskulls with 1d6 minotaur skeletons 10 led by 1 orc war chief with 1 tanarukk (VGtM) 8 1d4+1 wights with 2d6 zombies or 1d4 spawn of Kyuss (VGtM) 9 1d4+1 ghosts or 1d2 of the lonely (MToF) Planar Creatures (Levels 1-4) 10 1d3 wights mounted on beholder zombies d4+d6 2 1 xorn Underdark Giants (Levels 5-10) 3 1 water weird or 1 shadow demon d4+d6 4 1d2 dust mephits and 1d4 mud mephits or 1d4 vargouilles (VGtM) 2 1d4 ogres led by 1 fire giant or 1 spirit troll (MToF) 5 1d2 hell hounds or 1d2 flail snails (VGtM) 3 1d3 ettins and 1d2 trolls 6 1d3 gargoyles 4 1 cyclops with 2d4 giant toads 7 1d6 magma mephits or 1d4 maw demons (VGtM) 5 1d6 ogres led by 1 ettin 8 1d4 fire snakes or 1 babau (VGtM) 6 1 fomorian or 1 venom troll (MToF) and 1d2 trolls 9 1 gargoyle and 1d3 magma mephits or 1 barghest (MToF) 7 1d3 stone giants 10 1 salamander or 1 earth elemental 8 1d4 trolls 9 1d2 fire giants or 1 rot troll (MToF) Sample10 1 cyclops and 1d2 ettin s file Underdark Monsters (Levels 1-4) Yuan-ti Encounters (Levels 1-4)

d4+d6 d4+d6 2 1d2 grells or 1 mindwitness (VGtM) 2 1 yuan-ti malison with 1d4 constrictor snakes 3 1 minotaur 1d2 yuan-ti purebloods with 1d4+1 giant poisonous snakes or 1 yuan-ti 3 4 1d2 hook horrors or 1d3 rust monsters nightmare speaker (VGtM) and 1d4 giant poisonous snakes 1 yuan-ti malison with 1d2 yuan-ti purebloods or 1d3 yuan-ti 5 1d3 gricks or 2d6 stirges 4 purebloods with 1 yuan-ti broodguard (VGtM) 6 1d4+2 darkmantles or 1d2 spectators 5 1d4+1 yuan-ti purebloods or 1 yuan-ti mind whisperer (VGtM) 7 1d3 carrion crawlers 6 1d2 yuan-ti malisons or 1d3 yuan-ti broodguards (VGtM) 8 1d6+1 piercers or 1d2 trappers (VGtM) 7 1 yuan-ti pureblood with 1 giant constrictor snake 9 1d2 nothics 1d3 yuan-ti purebloods with 1d4 cultists or 1 yuan-ti broodguard 10 1 otyugh 8 (VGtM) and 1d4 giant lizards 9 1d3 yuan-ti purebloods with 1d2 swarms of poisonous snakes Underdark Monsters (Levels 5-10) 1d4 yuan-ti purebloods with 1d3 commoner prisoners or 1 yuan-ti pit 10 d4+d6 master (VGtM) 2 1d4 earth elementals or roll on Planar Creatures lvl 5-10 2d4 phase spiders or 2d4 adult kruthiks (MToF) and 2d6 young Yuan-ti Encounters (Levels 5-10) 3 kruthiks (MToF) d4+d6 4 1d4+2 gricks led by a grick alpha or 1 froghemoth (VGtM) 2 1d4+1 yuan-ti malisons led by 1 yuan-ti abomination 5 1d4 umber hulks or 1 warlock of the fiend (VGtM) with 1d4 spectators 2d6 yuan-ti purebloods with 1d4+1 yuan-ti malisons or 1d2 yuan-ti 3 6 1d2 ropers with 2d4 piercers or 1d2 gauths (VGtM) mind whisperers (VGtM) and 1 yuan-ti abomination 1d6 chuuls or 1d4 neogi adults (VGtM) and 2d6 neogi hatchlings 2d4 yuan-ti purebloods led by 1 yuan-ti abomination or 1 yuan-ti pit 7 4 (VGtM) master (VGtM) with 2d6 yuan-ti broodguards (VGtM) 8 2d4 hook horrors or 1d4 adult oblexes (MToF) 2d4 yuan-ti malisons or 1d4 yuan-ti mind whisperers (VGtM) with 2d4 5 2d4 grells or 1 neogi master (VGtM) with 1 charmed minotaur and yuan-ti purebloods 9 1d4 neogi adults (VGtM) 1 yuan-ti abomination or 2d4 yuan-ti broodguards (VGtM) led by 6 10 1 spirit naga or 1 balhannoth (MToF) 1d4+1 yuan-ti malisons 3d6 yuan-ti purebloods or 1 yuan-ti abomination with 1d6 yuan-ti 7 Underdark Slaves (Levels 1-4) broodguards (VGtM) 2d6 yuan-ti purebloods with 1 giant constrictor snake and 1d6+1 Can be added to any encounters of Underdark denizens that 8 swarms of poisonous snakes use slaves. 1d3 yuan-ti malisons with 1 hydra or 1 yuan-ti pit master (VGtM) with 9 d8+d12 1d4 giant constrictor snakes and 1d4 yuan-ti malisons 2 1d4 kuo-toa 10 1 yuan-ti abomination with 3d6 giant poisonous snakes 3 1d4 troglodytes 4 2d4 human (or gnome) guards 5 1d4 half elf (or half orc) commoners 6 1d3 ogres 7 2d4 orcs 8 2d4 tiefling (or dragonborn) commoners 9 2d4 kobolds or 2d4 derro (MToF) 10 2d6 human commoners 11 2d4 goblins 12 2d4 halfling (or dwarf) commoners 13 2d4 grimlocks 14 2d4 elf (or gnome) commoners 15 2d4 deep gnomes or 2d4 xvarts (VGtM) 16 1d3 duergar 17 2d4 human tribal warriors 18 1d3 quaggoths 19Sample1d4 bugbears file 20 1 minotaur