The Flying Dutchman

Flying, Vigilance
As long as The Flying Dutchman is an artifact creature all pirates you control get +1/+1 for each other pirate you control
Crew 5 (Tap any number of creatures you control with total power 5 or more: This Vehicle becomes an artifact creature till end of turn, The Flying Dutchman also gets a +2/+0 for each creature tapped this way till end of turn)