Cosima, Lord of the Seas

Signature {1}{r}{g}(As you cast this spell you may pay
the signature weapon cost, if you do copy this spell, the
copy enters the battlefield transformed)
When this creature dies, return it to its owner's
hand at the beginning of the next end step
Whenever you attack with one or more vehicles,
reveal that many cards from the top of your
library putting all lands from among them onto
the battlefield one card into your hand, and the
rest on the bottom of your library in any order.