Necromantic Thirst is a common Enchantment — Aura card from Ravnica: City of Guilds (RAV), collector number 97. Current market price: $0.16 (foil $0.35), TCGplayer market prices via Scryfall.
Enchant creature Whenever enchanted creature deals combat damage to a player, you may return target creature card from your graveyard to your hand.