Prismatic Vortex
Hazard
Level 10 Obstacle
XP 500

A swirling vortex of prismatic energy flows through this room.

Hazard: The swirling vortex of energy attacks creatures in this chamber.Perception     DC 22: The character can see that energy flows from the menhirs in the center of the room into the vortex.Arcana     DC 28: The character treats the vortex as normal rather than difficult terrain, since a perceptive eye and a good knowledge of magic allows a character to see the ebb and flow of its buffeting tides (see below).Initiative +8TriggerThis hazard begins the encounter active.AttackStandard Action      Close burst 2
Target: All creatures in or within 2 squares of the vortex.Attack: +13 vs. AnyHit: For each defense hit, the target takes 1d6 damage. If two or more defenses are hit, the target is pulled 2 squares into the vortex or is knocked prone if it is already within the vortex.EffectThe vortex and all squares adjacent to it are difficult terrain. It blocks line of eff ect but not line of sight.
A character who begins his turn within the vortex or adjacent to it is subject to an attack from the vortex as described above.
Countermeasures     Strength DC 21: Toppling the menhirs destroys this hazard. A successful check or an attack that does more than 15 damage reduces the hazard’s attack bonus by 2. After a combination of three such successful checks or attacks, the menhir tumbles over and the hazard’s effect ends. The menhir’s space becomes difficult terrain.

Published in H3 Pyramid of Shadows, page(s) 47.