Warlock Class is a uncommon Enchantment — Class card from Adventures in the Forgotten Realms (AFR), collector number 125. Current market price: $0.23 (foil $0.43), TCGplayer market prices via Scryfall.
(Gain the next level as a sorcery to add its ability.) At the beginning of your end step, if a creature died this turn, each opponent loses 1 life. {1}{B}: Level 2 When this Class becomes level 2, look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard. {6}{B}: Level 3 At the beginning of your end step, each opponent loses life equal to the life they lost this turn. (Damage causes loss of life.)