Charge of the Forever-Beast is a uncommon Sorcery card from Ikoria: Lair of Behemoths (IKO), collector number 147. Current market price: $0.16 (foil $0.38), TCGplayer market prices via Scryfall.
As an additional cost to cast this spell, reveal a creature card from your hand. Charge of the Forever-Beast deals damage to target creature or planeswalker equal to the revealed card's power.