World Breaker (Ex)

**Requirement**: Rovagug

As a free action after you confirm a critical hit with a melee weapon, you can expend one use of mythic power to shatter the ground beneath your foe. This creates difficult terrain in an area centered on your target with a radius equal to 10 feet × your tier. You movement is not impeded by the difficult terrain created by this effect. By expending two uses of mythic power when you use this ability, you can create an additional shock wave that extends beneath your target's feet in a cylinder with a depth equal to 5 feet × your tier. If this shock wave breaks the surface of the floor (such as if you used this ability on the second floor of a building), the area beneath the target collapses entirely and anyone in the area lands prone on the level below (possibly incurring falling damage in the process).