Isara, Legacy of Theimer

Whenever you cast a Vehicle spell, exile cards from
the top of your library until you exile a creature that
costs less. You may put that creature onto the
battlefield tapped. Put the exiled cards on the
bottom in a random order.

Whenever you crew a Vehicle, choose a creature that was used to crew it. It gains the power and toughness of the chosen creature until the end of the turn.