Tanngrisnir and Tanngnjóstr

When Tanngrisnir and Tanngnjóstr enters, if you control a God and don’t control a Vehicle, you may search your library for a Vehicle card, reveal it, put it into your hand, and shuffle.
Tanngrisnir and Tanngnjóstr crews vehicles as though its power was 4 greater.
Sacrifice Tanngrisnir and Tanngnjóstr: Create two Food tokens. If you do, return Tanngrisnir and Tanngnjóstr to your hand at the beginning of the next upkeep.