Dread Slaver is a rare Creature — Zombie Horror card from Avacyn Restored (AVR), collector number 98. Current market price: $0.27 (foil $1.56), TCGplayer market prices via Scryfall.
Whenever a creature dealt damage by this creature this turn dies, return it to the battlefield under your control. That creature is a black Zombie in addition to its other colors and types.