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"