Captain Zapp Brannigan

At the beginning of combat on your turn, choose target nonland permanent you control.
Until end of turn, it becomes a Vehicle artifact
with base power and toughness each equal to its
mana value, and it gains crew 2 and "Crash Land Whenever this Vehicle deals damage, roll a
six-sided die. If the result is equal to this Vehicle's
mana value, sacrifice this Vehicle, then it deals
that much damage to any target."