Build and run your Advanced Dungeons & Dragons campaign on World Anvil!

START NOW

Tentacle Walls in Advanced Dungeons & Dragons

Print

Tentacle Walls

Name
Tentacle Walls
Type of Magic
Priest
Spell Level
7th
School
Enchantment and Charm (House Spurius)
Sphere
Wards
Reversible?
No
Range
​Touch​
Components

Material, Somatic, Verbal

The material component is the dried tentacle of an octopus.

Duration
​Special ​
Casting Time
1 round ​
Area of Effect
50-foot cube ​
Saving Throw
None
Effects
Tentacle walls enables the caster to enchant a single room whose volume is less than or equal to the area of effect. The spell activates 1d4 rounds after any creature other than the caster enters the room. The intruder must be larger than a normal rat; that is, it must be larger than one-half cubic foot or weigh more than three pounds. When the spell is activated, six black, leathery tentacles sprout inside the room; the tentacles are evenly divided among the room's surfaces (for instance, if the room is a cube, one tentacle sprouts from the floor, one sprouts from the ceiling, and one sprouts from each of the four walls). The whip-like tentacles grow to the length of the room and swing wildly. Each round, a tentacle has a 30% chance of striking a random creature in the room, inflicting 1d6 points of damage (save vs. spell for half damage). Each tentacle has AC 0 and 25 hit points. When a tentacle is reduced to 0 hit points, it disappears in a puff of black smoke. If all creatures are killed or withdraw from the room, the surviving tentacles withdraw, disappearing into the walls. If the spell is activated again, six tentacles reappear; new tentacles are created to replace any destroyed previously. As long as one tentacle survives an encounter, the tentacles will continue to be replaced. Only when all six tentacles are destroyed is the spell permanently negated. ​
Created by thor547 Check out more Advanced Dungeons & Dragons ADD2E Spells Blocks
« Go to the Statblocks Library

World Anvil: The Ultimate Worldbuilding Toolset & RPG Campaign Manager

Created for Dungeon Masters and Game Masters, World Anvil has everything you need to build your own homebrew RPG campaign setting, and run your games, either online or around the table!

  • Speed up prep with a whole library of community statblocks you can copy (and edit!)
  • Enthrall your players with interactive maps, timelines, and a whole wiki of your world
  • Keep track of NPCs, PC character sheets, monster stats, treasure, journals, notes and more
  • Quickly look up essential info with session notes, campaign map markers, and bookmarked lore at your fingertips
  • Build your own campaign setting, or expand a prewritten campaign, with expertly created worldbuilding templates and prompts
  • Control who sees what in your worldbuilding wiki with secrets and subscriber groups
  • Collaborate with players and GMs to build the campaign setting of your dreams 
  • NEVER lose your notes!

GET STARTED TODAY!

Take the first step. Create your account. Your world and characters await!

REGISTER NOW

100+ RPG systems

Hello! <3 I hope you are having a nice day!

Find your way!

Resources

WHO WE ARE

LEGAL

Get the news

Worldbuilding Academy

Listen to our Podcast

Gold Ennie 2019 for Best Digital Aid
by 3 Armored Kittens · Prodromos v.1.1 - World Anvil 0.9.15.050 © 2017-2025 [en] | Anvil Time: 21:34, Jun 10 2026