Grand Arbiter Augustin IV is a rare Legendary Creature — Human Advisor card from Secret Lair Drop (SLD), collector number 1483★. Current market price: — (foil $22.90), 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.