Swallow Whole is a uncommon Sorcery card from Ikoria: Lair of Behemoths (IKO), collector number 35. Current market price: $0.25 (foil $0.19), TCGplayer market prices via Scryfall.
As an additional cost to cast this spell, tap an untapped creature you control. Exile target tapped creature. Put a +1/+1 counter on the creature tapped to pay this spell's additional cost.