When Conqueror's Galleon attacks, exile it at end of combat, then return it to the battlefield transformed under your control.
Crew 4 (Tap any number of creatures you control with total power 4 or more: This Vehicle becomes an artifact creature until end of turn.)
//
Conqueror's Foothold
(Transforms from Conqueror's Galleon.)
T: Add C to your mana pool.
2, T: Draw a card, then discard a card.
4, T: Draw a card.
6, T: Return target card from your graveyard to your hand.
When this Vehicle attacks, exile it at end of combat, then return it to the battlefield transformed under your control.
Crew 4 (Tap any number of creatures you control with total power 4 or more: This Vehicle becomes an artifact creature until end of turn.)
(Transforms from Conqueror's Galleon.)

: Add

.
{2},

: Draw a card, then discard a card.
{4},

: Draw a card.
{6},

: Return target card from your graveyard to your hand.