Hallowed Healer is a common Creature — Human Cleric card from Odyssey (ODY), collector number 25. Current market price: $0.10 (foil $0.73), TCGplayer market prices via Scryfall.
{T}: Prevent the next 2 damage that would be dealt to any target this turn. Threshold — {T}: Prevent the next 4 damage that would be dealt to any target this turn. Activate only if there are seven or more cards in your graveyard.