Grand Arbiter Augustin IV [The List] Tiefling Barbarian where X is that creature's

where X is that creature's mana value

Set: Secret Lair Drop Promos Type: Artifact Creature — Thopter Rarity: Rare Cost: {0} Flying

Set: Secret Lair Drop Series Type: Creature — Sliver Rarity: Rare Cost: {U} Sliver creatures you control have flying

its controller adds an additional one mana of the chosen color

While most overworlders fortunately don't realize this

Grand Arbiter Augustin IV [The List] Tiefling Barbarian where X is that creature'sSet: The List Type: Legendary Creature Human Advisor Rarity: Rare Cost: {2}{W}{U} 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. The Arbiter is a conduit of justice, a will so disciplined that it dispenses justice without ego or remorse.