Aiden, the Cold-Hearted

At the beginning of your end step, if a pirate you
controlled dealt damage to an opponent, you may
search any player's library for a creature card
with power less then X, where X is the amount
of damage pirates you controlled dealt this turn.
If you do, put that card onto the battlefield
under your control. Then shuffle that library.
Return it to the owner's hand at the beginning
of your next end step.
"Mount the cannons and prepare for war."