Teshar, Ancestor's Apostle is a rare Legendary Creature — Bird Cleric card from Dominaria (DOM), collector number 36. Current market price: $0.32 (foil $1.56), TCGplayer market prices via Scryfall.
Flying Whenever you cast a historic spell, return target creature card with mana value 3 or less from your graveyard to the battlefield. (Artifacts, legendaries, and Sagas are historic.)