Pirate Oath

Convoke
For every three humans tapped for convoke, put a 2/2 Human Pirate token with plunder 1 onto the battlefield
Creatures you control gain plunder 1 (during your main phase, you may flip a coin, if heads draw one card, then target opponent puts the top card of his or her deck into his or her graveyard, if tails this creature fights one of the opponents creatures) and have "{u}{t} tap target creature"