Wailing Echo-Gravel
An area of crystalline dust and purple pebbles that absorbs nearby sound and releases it in a violent, concussive burst when physically disturbed.
Wailing Echo-Gravel
Defenses
Detection
“A 10-foot square patch of the floor is covered in fine, violet-hued sand and sharp, obsidian-like gravel. The air above the patch seems to shimmer with a faint, heat-haze distortion.”
Standard Engagement
A creature enters the area covered by the gravel or makes a loud noise (such as casting a spell with verbal components) within 10 feet of it.
None
The gravel settles and re-arms itself after 10 minutes of complete silence.
When triggered, the gravel releases a shockwave. Each creature within 15 feet must make a DC 14 Constitution saving throw. On a failure, a creature takes 4d10 thunder damage and is Deafened for 1 minute. On a success, the creature takes half as much damage and is not deafened.
If a creature within 30 feet of the gravel deals thunder damage or casts a spell with a verbal component, the gravel triggers immediately even if no one is touching it.
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