Glyph Keeper is a rare Creature — Sphinx card from Amonkhet Promos (PAKH), collector number 55s. Current market price: — (foil $0.50), TCGplayer market prices via Scryfall.
Flying Whenever this creature becomes the target of a spell or ability for the first time each turn, counter that spell or ability. Embalm {5}{U}{U} ({5}{U}{U}, Exile this card from your graveyard: Create a token that's a copy of it, except it's a white Zombie Sphinx with no mana cost. Embalm only as a sorcery.)