Mox Opal [Kaladesh Inventions] Mountain Set: Diamond & Pearl: Majestic

Set: Diamond & Pearl: Majestic Dawn Type: Grass Rarity: Rare Retreat cost: Colorless

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

choose a basic land type

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

Set: EX: Dragon Frontiers Type: Grass Rarity: Common Retreat cost: Colorless

Mox Opal [Kaladesh Inventions] Mountain Set: Diamond & Pearl: MajesticSet: 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.