R. Slab Slap Trap
Glowing symbols dot the west wall in what looks like could be a pattern. The opposite wall is a big steel slab. When a symbol on the west wall is touched, it changes color and a soft ethereal bell chimes. When the third rune is touched, the slab slams itself against the west wall, dealing 7 (2d6) Bludgeoning damage to each creature in the room. While the slab is in this position, the east wall is…