Random Encounter Tables


Abomination Vaults


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I've written some random encounter tables for the entire dungeon, so I figured I would share!

If you're playing at the table, I recommend using the Angry GM's Tension Pool mechanic for random encounters. Since I'm playing on VTT, I just roll a 60% of encounter check roughly once per hour in the dungeon (max 2 rolls per long rest inside the dungeon), or when my players do something particularly noisy or stupid.

I've kept the encounters fairly tame, as I find the threat of a random encounter is usually enough to get my players to behave. The encounters could certainly be beefed up some more if your players stop being afraid of them.

Floor 1 - Gauntlight Keep
1-10 Snapping Turtle
11-30 1d4 Mitflits
31-50 1d2 Giant Maggots
61-70 Ball Python
71-80 Giant Frog
81-90 Freznelkesh (no encounter if she is killed)
90-100 Roll on Floor 2 table

Floor 2 - Servant's Quarters
1-10 Roll on Floor 1 Table
21-30 Corpselight
31-40 1d4 Rat Swarms
41-50 Choker
51-60 1d4 Morlocks
61-70 1d2 Morlock Engineers
71-80 Morlock Engineer & 1d4 Morlock Scavengers
81-90 1d2 Hunting Spiders
91-100 Roll on Floor 3 Table

Floor 3 - Library
1-10 Roll on Floor 2 Table
11-20 Gibbering Mouther (from Area C40, remove if killed)
21-30 1d4+1 Ghouls
31-40 1d2 Canker Cultists
41-50 Canker Cultist & 1d4 Ghouls
51-60 1d2 Cave Fishers
61-70 1d2 Corpselights
71-80 Ghast
81-90 Ghoul Crocodile
91-100 Roll on Floor 4 Table

Floor 4 - Belcorra's Retreat
1-10 Roll on Floor 3 Table
11-20 1d4 Corpselights
21-40 1d4 Flickerwisps
41-50 Namorrodor
51-60 1d2 Squirming Swill
61-70 Volluk Azrinae (no encounter if killed)
71-80 Vampiric Mist
81-90 1d4 Blindheims
91-100 Roll on Floor 5 Table

Floor 5 - Arena
1-10 Roll on Floor 4 Table
11-20 Gibbering Mouther
21-30 2 Basilisks (from area E10, remove if killed)
31-40 1d4 Skeletal Champions
41-50 Skeletal Mage
51-60 1d2 Grothluts
61-70 Will-o-Wisp
71-80 Otyugh
81-90 1d4 Flickerwisps
91-100 Roll on Floor 6 Table

Floor 6 - Fleshwarping Labs
1-10 Roll on Floor 5 table
11-20 Jafaki & Drider (remove if killed)
21-40 Seugathi Servant
41-50 1d2 Dreshkans
51-60 Drider
61-70 Will-o-Wisp
71-80 Mulventok
81-90 1d4 Shangriol Heaps
91-100 Roll on Floor 7 Table

Floor 7 - Prison
1-10 Roll on Floor 6 Table
11-20 Sacuishu (remove if killed)
21-30 1d3 Barbazus
31-40 Erinyes
41-50 Levaloch
51-60 1d3 Dreshkans
61-70 1d4+1 Grothluts
71-80 Will-o-Wisp
81-90 Gibbering Mouther
91-100 Roll on Floor 8 Table

Floor 8 - Farm
1-10 Roll on Floor 7 Table
11-20 Belcorra (no encounter if she is regenerating)
21-30 1d2 Chuul
31-40 1d4 Caligni Stalkers
41-50 1d4 Children of Belcorra
51-60 Elder Child of Belcorra
61-70 1d4 Drow Hunters
71-80 Drow Shootist
81-90 Dread Wisp
91-100 Roll on Floor 9 Table

Floor 9 - Hunting Grounds
1-7 Roll on Floor 8 Table
8-14 Belcorra (no encounter if she is regenerating)
15-22 Riding Lizard (reduce Yldaris population if killed)
23-37 Salaisa Malthulas & 1d4 Drow Wardens (from I12 & I14)
38-45 2 Drow Shootists (reduce Yldaris population if killed)
46-53 2 Caligni Defenders (reduce Caligni population if killed)
54-61 2 Urdefhan Death Scouts & 2 Urdefhan lashers (reduce Urdefhan population if killed)
62-76 4 Urdefhan Warriors & 2 Ceustodaemons (reduce Urdefhan population if killed)
77-83 Urdefhan Blood Mage & 3 Tormentors (from area I35)
84-91 Cauthooj (from area I41)
92-100 Ravirex (from area I51)


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Nice, thanks for sharing.

I recently made a small random encounter table for my group as well (currently at level 6), as I wanted to create a more dynamic outside environment (swamps/ruins). My party cleared out the mitflits several in-game weeks ago and I want them to stay on their toes.

Rolling 1d4:

1. Boggard Hunter (CL 7) + 2 Boggard Warriors (CL 2)
2. Cultists*: Nhimbaloth Demagogue (CL 7) + 2 Nhimbaloth Cultist (CL1)
3. Absalom Agents*: Garggin Lowdelver (CL 5) + 2 Bruisers (CL 5)
4. Elite Young Black Dragon** (CL 8)

* If you haven't already, I recommend checking out the Abomination Vault's GM Guide. Lots of interesting options, including these random encounters.
** My party skipped the *entire* second level (servant's quarters), so this will probably be a reskin for the Freznelkesh-encounter.

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