Stormcaller

When Stormcaller enters the battlefield or
becomes crewed you may exile target instant
or sorcery card in your graveyard with mana
value 3 or less, until the end of the turn you
may cast that card without paying its mana cost.
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.)