Water Serpent
Trap
Level 11 Elite Lurker
XP 1200
Strange ripples flow through both the pool of water and the rivulets that trace their way across the floor.
Trap: A water serpent manifests and attacks when the water in the pool is disrupted.Perception✦ DC 21: The character realizes that the shifting water distorts the image of the key more than it should.Arcana✦ DC 21: The character realizes that the distortion isn't natural; illusion magic is making the key difficult to pinpoint.Trigger 1 While the key remains in the water, the serpent manifests and attacks whenever a character disrupts the water.Trigger 2 After the key is removed from the pool but is still within the room, the water serpent attacks any creature within 2 squares of the pool at the start of that creature's turn.
Attack * TeleportationOpportunity Action Melee 2
Target: The triggering creature, or the nearest creature to the pool if the triggering creature is using an effect to disrupt the water from a distance.Attack: +16 vs. ACHit: 2d6 + 5 damage, and the target is teleported into the center of the river, appearing adjacent to the obelisk.Countermeasures✦ A character can ready an action to attack the water serpent (AC 22, other defenses 19, immune poison, resist 5 all, resist 15 fire) when it manifests to attack. If the serpent takes damage, it disappears without attacking, but manifests again if triggered.
✦ Once the key has been removed from the chamber, the trap deactivates.
Published in Tomb of Horrors, page(s) 25.