Rot Grub Pit
Object
Level 4 TrapXP 175

Detect Perception DC 21

Initiative -

Immune attacks

Triggered Actions

Attack Encounter

Trigger: A creature enters one of the trap’s four squares.

Attack (Immediate Reaction): Melee 1 (triggering creature); +7 vs. Reflex

Hit: The target falls 20 feet to the bottom of the pit, taking 2d10 damage and falling prone.

Miss: The target returns to the last square it occupied, and its movement ends immediately.

Effect: The false floor opens, and the pit is no longer hidden. Any creature that starts its turn in the pit is exposed to rot grub infestation. At the end of the encounter, the target must make a saving throw. On a failed saving throw, it contracts rot grub infestation (stage 1).

Countermeasures

Disable: Thievery DC 21 Success: The false floor is jammed and cannot attack.

Destroy: Dealing 10 or more fire damage removes the rot grub infestation from the bottom of the pit.

Published in The Book of Vile Darkness, page(s) 2-38.