Mox Opal [Kaladesh Inventions] Set_Urza's Destiny where X is the number

where X is the number of Zombies you control

Set: Kaladesh Prerelease Promos Type: Legendary Creature — Vedalken Artificer Rarity: Rare Cost: {3}{U} Artifacts you control have hexproof

Then look at the exiled cards and put them on top of your library in any order

"I fear that as we scurry after phantoms

Mox Opal [Kaladesh Inventions] Set_Urza's Destiny where X is the numberSet: 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.