Random Traps; Trap Effects

Source: Dungeon Master’s Guide p. 297

Trap Effects

dice: d100	Effect
1-4	Magic missiles shoot from a statue or object
5-7	Collapsing staircase creates a ramp that deposits characters into a pit at its lower end
8-10	Ceiling block falls, or entire ceiling collapses
11-12	Ceiling lowers slowly in locked room
13-14	Chute opens in floor
15-16	Clanging noise attracts nearby monsters
17-19	Touching an object triggers a disintegrate spell
20-23	Door or other object is coated with contact poison
24-27	Fire shoots out from wall, floor, or object
28-30	Touching an object triggers a flesh to stone spell
31-33	Floor collapses or is an illusion
34-36	Vent releases gas: blinding, acidic, obscuring, paralyzing, poisonous, or sleep-inducing
37-39	Floor tiles are electrified
40-43	Glyph of warding
44-46	Huge wheeled statue rolls down corridor
47-49	Lightning bolt shoots from wall or object
50-52	Locked room floods with water or acid
53-56	Darts shoot out of an opened chest
57-59	A weapon, suit of armor, or rug animates and attacks when touched (see “Animated Objects” in the Monster Manual)
60-62	Pendulum, either bladed or weighted as a maul, swings across the room or hall
63-67	Hidden pit opens beneath characters (25 percent chance that a black pudding or gelatinous cube fills the bottom of the pit)
68-70	Hidden pit floods with acid or fire
71-73	Locking pit floods with water
74-77	Scything blade emerges from wall or object
78-81	Spears (possibly poisoned) spring out
82-84	Brittle stairs collapse over spikes
85-88	Thunderwave knocks characters into a pit or spikes
89-91	Steel or stone jaws restrain a character
92-94	Stone block smashes across hallway
95-97	Symbol
98-100	Walls slide together
^trap-effects