Invasion of the Giants is a uncommon Enchantment — Saga card from Kaldheim (KHM), collector number 215. Current market price: $0.25 (foil $0.39), TCGplayer market prices via Scryfall.
(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Scry 2. II — Draw a card. Then you may reveal a Giant card from your hand. When you do, this Saga deals 2 damage to target opponent or planeswalker. III — The next Giant spell you cast this turn costs {2} less to cast.