Pulverize

Wis 13, Exotic Weapon Proficiency (tauren totem), Follower of the Totem

You can declare a Pulverize attempt on a full attack action with your tauren totem. Instead of making a normal attack roll, you strike the ground with your tauren totem. Roll damage for the attack, but do not apply the damage to any target. Instead, any creature within 20 feet of you must succeed at a Reflex save (DC 10 + the damage rolled) or fall prone. You can use Pulverize only once per round and no more than a number of times per day equal to 1 + your Wisdom bonus. When you use Pulverize, you forfeit any bonus or extra attacks granted by other feats or abilities (such as Cleave or haste). A pulverize attempt draws an attack of opportunity.