Unrooted Ancestor is a uncommon Creature — Spirit Cleric card from Tarkir: Dragonstorm (TDM), collector number 96. Current market price: $0.09 (foil $0.24), TCGplayer market prices via Scryfall.
Flash {1}, Sacrifice another creature: This creature gains indestructible until end of turn. Tap it. (Damage and effects that say "destroy" don't destroy it.)