Luffy, King of Pirates

Partner with Blackbeard, Emperor of Darkness
Will of D. – Whenever a creature you control attacks, exile the top card of your library. You may play that card this turn paying their mana cost.

Pirate Leadership – Once each turn, you may cast a spell from exile without paying its mana cost if you attacked with three or more creatures this turn.

{5}{r}{u}{w}{t}: Pirates you control gains +x/+x where x is the number of pirate creatures you control, this ability can only be used one per turn