Flash Flood
Terrain
Level 8 HazardXP 350

Detect Perception DC 16 or Nature DC 24

Initiative +8

Immune attacks

Triggered Actions

Attack At-Will

Trigger: A creature enters a square in the area affected by the flash flood.

Attack (Opportunity Action): Close burst 10 (creatures in burst); +11 vs. Fortitude

Hit: 1d10 + 5 damage, and the targets falls prone and slides 8 squares downhill.

Miss: Half damage, and the target slides 4 squares downhill.

Countermeasures

Detect: Perception DC 16 Success: Characters who make successful Perception checks at the edge of the flash flood area can add their Strength modifiers to their Fortitude defense against the attack made by the flash flood.

Published in Dungeon Magazine 189.