Going Merry

Companion-Each creature card in your deck is a
pirate. (If this card is your chosen companion,
you may put it into your hand from outside the
game for {3} any time you could cast a sorcery.)
Crew 3 (Tap any number of creatures you
control with total power 3 or more: This Vehicle becomes an artifact creature until end of turn.)
Whenever you crew Going Merry, until end of
turn, Pirate creatures you control entering the battlefield have discover 4.