Mox Opal [Kaladesh Inventions] Ongoing Scheme I simply reveal

I simply reveal

Counters can't be put on artifacts

Set: Happy Holidays Type: Sorcery Rarity: Mythic Cost: {1}{R} Target creature you control climbs into Goblin Sleigh Ride

Set: HarperPrism Book Promos Type: Land Rarity: Rare {3}

change Halfdane's base power and toughness to the power and toughness of target creature other than Halfdane until the end of your next upkeep

Mox Opal [Kaladesh Inventions] Ongoing Scheme I simply revealSet: 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.