Rydon, Mech-fleet Admiral

Equipped creatures you control get +2/+2 and
have flying and menace.
Whenever one or more Pirates you control attack
a player, you may choose an artifact, instant or
sorcery card in your graveyard with mana value
less than the total power of Pirates attacking that
player. Exile that card. You may cast it for as
long as it remains exiled.