Lullmage's Domination is a uncommon Sorcery card from Zendikar Rising (ZNR), collector number 66. Current market price: $0.08 (foil $0.29), TCGplayer market prices via Scryfall.
This spell costs {3} less to cast if it targets a creature whose controller has eight or more cards in their graveyard. Gain control of target creature with mana value X.