Thunderstone Cascade Trap
Level 7HazardHazardUncommonMediumLegacy
AC 26
HP 54 (BT 27)
Speed 0 ft.
Fort +15
Ref +13
Will +0
Perc +0
Size Medium
Uncommon
Stealth +15
Disable DC 27 thievery (expert) to safely cut the trip wire
Immunities critical hits, precision
Recall Knowledge arcana DC 25
Abilities
Thunderstone Explosion↺
Trigger The trip wire is disturbed --- Effect Several thunderstones bounce down the stairs and explode. Each creature within 10 feet of the lower half of the stairs takes 6d10 sonic damage (DC 24 fortitude save). Creatures that fail this save are additionally Deafened for 1 minute; creatures that critically fail this save are instead deafened for 1 hour.
Description
A trip wire halfway up the stairs releases half a dozen spherical thunderstones that bounce down the stairs and explode.