Sunder-earth

This weapon trembles with power—power to crush, to pound, to shake the earth.

Base: Once per turn on a successful hit, the square the target is standing in becomes difficult terrain until the start of your next turn. If the target attempts to leave the square before then, they must succeed on a Reflex saving throw or fall prone.

Superiority +1: Once per encounter as a standard action, you may destroy the ground by smashing it with your weapon. A number of squares equal to the Superiority bonus become difficult terrain. These squares must be contiguous and at least one must be adjacent to you.

Superiority +3: Once per encounter as a standard action, you may may strike the earth, causing a localized earthquake, causing all adjacent enemies to succeed on a Reflex saving throw or fall prone.

Weapon Type: Any Bludgeoning Melee