Coin of Mastery (Surge Foil) [Teenage Mutant Ninja Turtles Commander] Mutant Berserker Hero Set: Secret Lair Showdown Type:

Set: Secret Lair Showdown Type: Creature — Rat Rarity: Rare Cost: {1}{B}{B} Relentless Rats gets +1/+1 for each other creature on the battlefield named Relentless Rats

Set: Edge of Eternities Promo Pack Type: Legendary Creature — Human Artificer Rogue Rarity: Common Cost: {4}{R}{W} Double strike

Set: Ixalan Prerelease Promos Type: Artifact Rarity: Rare Cost: {5} As Vanquisher's Banner enters the battlefield

Set: Alpha Edition Type: Enchantment Rarity: Uncommon Cost: {G}{G} {G}{G}: Counter target black spell

It cuts through the Cosmos itself

Coin of Mastery (Surge Foil) [Teenage Mutant Ninja Turtles Commander] Mutant Berserker Hero Set: Secret Lair Showdown Type:Set: Teenage Mutant Ninja Turtles Commander Type: Artifact Rarity: Rare Cost: {4} Each creature you control enters with an additional +1 +1 counter on it for each mana from an artifact source spent to cast it. T: Create a Treasure token. (It's an artifact with "T, Sacrifice this token: Add one mana of any color.") Nowhere else can one coin buy you a second chance.