R: 50 ft; T: area; D: [dice]x10 minutes / permanent
Command stone or rock to open in a pit or tunnel 10 ft in diameter and [dice]x10 ft deep. The stone slowly returns to its former state, crushing anything still inside by the end of the duration.
Alternatively, can close a pit or tunnel in range, which will reopen slowly. Creatures trapped inside are expelled, not crushed.
At 4 [dice], the duration is permanent.