Ethersworn Adjudicator is a mythic Artifact Creature — Vedalken Knight card from Conflux (CON), collector number 26. Current market price: $0.72 (foil $12.41), TCGplayer market prices via Scryfall.
Flying {1}{W}{B}, {T}: Destroy target creature or enchantment. {2}{U}: Untap this creature.