Mox Opal [Kaladesh Inventions] Goat Set: Amonkhet Invocations Type: Instant

Set: Amonkhet Invocations Type: Instant Rarity: Mythic Cost: {3}{U}{U} You may pay 1 life and exile a blue card from your hand rather than pay this spell's mana cost

(They can block and be blocked only by creatures with shadow

a creature

Set: Antiquities Type: Land — Urza's Mine Rarity: Uncommon {T}: Add {C}

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