Esper Sentinel is a rare Artifact Creature — Human Soldier card from Modern Horizons 2 Promos (PMH2), collector number 12s. Current market price: — (foil $94.88), TCGplayer market prices via Scryfall.
Whenever an opponent casts their first noncreature spell each turn, draw a card unless that player pays {X}, where X is this creature's power.