False-Floor Pit
Object
Level 1 TrapXP 100

Detect Perception DC 19

Immune attacks

Triggered Actions

⚔ Attack ✦ Encounter

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

Attack (Immediate Reaction): Melee 1 (triggering creature); +4 vs. Reflex

Hit: The target falls 10 feet to the bottom of the pit, taking 1d10 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.

Countermeasures

✦ Disable: Thievery DC 19 Success: The false floor is jammed closed and the trap cannot attack.

Published in Dungeon Master's Kit, page(s) 216, Dungeon Magazine 201.