Driver of the Dead
Avacyn Restored — common
Creature — Vampire
Driver of the Dead rulings:
2020-08-07: If a card in a player's graveyard has in its mana cost, X is considered to be 0.
2020-08-07: If Driver of the Dead dies at the same time as a creature with mana value 2 or less, you can target that card and return it to the battlefield.
2020-08-07: If a creature card with mana value 2 or less becomes a copy of Driver of the Dead and dies, it can be the target of its own ability.