Grand Arbiter Augustin IV is a rare Legendary Creature — Human Advisor card from Double Masters 2022 (2X2), collector number 379. Current market price: $18.97 (foil $18.62), TCGplayer market prices via Scryfall.
White spells you cast cost {1} less to cast. Blue spells you cast cost {1} less to cast. Spells your opponents cast cost {1} more to cast.