Creature Club

 
Prerequisite(s): Str 15+
 
Benefit: If you have grappled and pinned a creature that is 2 size categories smaller than you, you may wield the pinned creature as a weapon, and threaten the area around you. Creatures of other sizes are too small or large to be used as a weapon effectively. Subsequent attacks that round or on later rounds can also be used to grapple with the hapless creature, as long as the creature is still pinned. You must use both hands to attack in this manner. You threaten the area around you with the pinned creature as you would if armed with a club one size category larger than you. Each time you hit in combat with the creature, you deal damage according to its size (see below) plus one-and-a-half times your Strength bonus for using both hands. The damage is split between the creature wielded as a club, and the target, rounded down. If the creature is wearing spiked armor, add that to the damage received by the target. Damage dealt: Tiny 1d4, Small 1d6, Medium 1d10, Large 2d6, Huge 2d8. For example, a Huge sized cloud giant with this feat, a Strength of 35, and 3 attacks per round uses the full attack action and grapples a Medium sized human fighter named Gort with his first attack. On his second attack he pins Gort. On the third attack, he uses Creature Club to attack Cabral, one of the Gort’s companions, with the human club, and hits for 1d10+18 points of damage, rolling a 5, for 23 points total. Gort and Cabral each take 11 points of damage. Unfortunately, for Cabral, the hapless Gort was wearing spiked armor, so Cabral takes another 1d6 damage.
 
Source: Beyond Monks