Mox Opal [Kaladesh Inventions] Mountain Set: Unlimited Edition Type: Artifact

Set: Unlimited Edition Type: Artifact Rarity: Uncommon Cost: {4} {1}

If at least one Zombie card is milled this way

Set: XY: Furious Fists Type: Fighting Rarity: Rare Retreat cost: Colorless

Set: Black & White: Dark Explorers Type: Lightning Rarity: Ultra Rare Retreat cost: Colorless

Mox Opal [Kaladesh Inventions] Mountain Set: Unlimited Edition Type: ArtifactSet: Kaladesh Inventions Type: Legendary Artifact Rarity: Mythic Cost: {0} Metalcraft {T}: Add one mana of any color. Activate this ability only if you control three or more artifacts. On loan from a private collection, this unique mechanism extracts power from a carefully prepared gemstone.