Lim-Dûl the Necromancer is a rare Legendary Creature — Human Wizard card from Time Spiral (TSP), collector number 114. Current market price: $1.48 (foil $8.40), TCGplayer market prices via Scryfall.
Whenever a creature an opponent controls dies, you may pay {1}{B}. If you do, return that card to the battlefield under your control. If it's a creature, it's a Zombie in addition to its other creature types. {1}{B}: Regenerate target Zombie.