Groundbreaker

Smash the ground, wall, floor, or surface beneath you. Creatures of your choice in the emanation must make a DEX save, taking 4d8 bludgeoning damage and falling prone on a failed save, or half damage only on a success. Loose objects are knocked aside.

This power has its own stable page so it can be linked from any character, item, location, story post, bargain, curse, or future reward.