Mountain Quake
FEAT 14 1 action
You are in Mountain Stance
You stomp, shaking the earth beneath you. Creatures on the ground within a 20-foot emanation take damage equal to your Strength modifier (minimum 0), with a basic Fortitude save against your class DC. On a failure, they also fall Prone. After you use this action, you can't use it again for 1d4 rounds.
If you have this feat, the Dexterity modifier cap to your AC while using Mountain Stance increases from +1 to +2.
Pathfinder Player Core 2ORC