Nurgle's Rot is a uncommon Enchantment — Aura card from Warhammer 40,000 Commander (40K), collector number 45. Current market price: $4.90, TCGplayer market prices via Scryfall.
Enchant creature an opponent controls When enchanted creature dies, return this card to its owner's hand and you create a 1/3 black Demon creature token named Plaguebearer of Nurgle.