Crush

Effect: Trap an enemy in stone, then crush them
Range: Touch
Defense: NA
Cost: 4
The caster causes the ground to open beneath their target, or a neighboring wall. A pair of hands will attempt to seize the character, and drag them into the stone. The caster rolls expression + spellcasting, and the result becomes the DT of the athletics check requires to escape the hands.
If the hands grab the player, then they are dragged into the stone, which immediately closes and inflicts 6 points of physical damage. The character is stuck, and freeing themselves requires they inflict 12 points of damage on the stone.