Triumph of Gerrard is a uncommon Enchantment — Saga card from Dominaria (DOM), collector number 38. Current market price: $0.24 (foil $0.64), TCGplayer market prices via Scryfall.
(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I, II — Put a +1/+1 counter on target creature you control with the greatest power. III — Target creature you control with the greatest power gains flying, first strike, and lifelink until end of turn.