Mox Opal [Kaladesh Inventions] Modern Masters Tokens Whenever an opponent taps a

Whenever an opponent taps a land for mana

and the silence of death

or Dragon creature card from your hand onto the battlefield tapped and attacking that opponent

Mephidross filled with roars of fury and wails of despair as the leonin fought to keep their memories from being pulled into the mists

creatures can't attack this turn

Mox Opal [Kaladesh Inventions] Modern Masters Tokens Whenever an opponent taps aSet: 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.