Multielemental Transformation Field
Hazard
Level 28 Lurker
XP 13000

Just at the edge of your vision, something flickers.

Hazard: The air shimmers over a wide area, concealing 10 random squares of this hazard.Perception     No check is required to see the air shimmering.     DC 33: The character can discern if any adjacent squares contain a multielemental transformation field.Arcana     DC 33: The character recognizes the hazard’s nature.TriggerWhen a creature enters one of the field’s squares, the hazard attacks.AttackOpportunity Action      Melee
Target: The triggering creatureAttack: +31 vs. WillHit: The target becomes a creature of mixed elements, taking ongoing 5 acid damage, ongoing 5 cold damage, ongoing 5 fire damage, ongoing 5 lightning damage, ongoing 5 poison damage, and ongoing 5 thunder damage (save ends all). Until it saves against the ongoing damage, the following effects also apply.     The target is immune to acid, cold, fire, lightning, poison, and thunder damage from any source other than this hazard.     Any creature that starts its turn adjacent to the target takes 15 damage of one of the following types, determined randomly: acid, cold, fire, lightning, poison, or thunder.
First Failed Saving Throw: The target is also immobilized (save ends both).
Second Failed Saving Throw: The target is permanently transformed into a nonliving column of mixed elements and stops taking ongoing damage. The transformation field repeats the attack against each creature adjacent to the target. In addition, each creature that begins its turn adjacent to the column of elements takes 10 damage of one of the following types, determined randomly: acid, cold, fire, lightning, poison, or thunder. The Remove Affliction ritual can restore the target to normal.
Special: A multielemental transformation field does not attack creatures that are already under the effect of a previous successful attack from the hazard.

Published in The Plane Below, page(s) 23.