Transmute Artifact [Antiquities] Champions of Kamigawa While it's true most Dragons

While it's true most Dragons are cruel

if you control at least five other Mountains

all creatures that opponent controls attack if able

Set: Amonkhet Invocations Type: Enchantment Rarity: Mythic Cost: {2}{R} {3}{R}{R}: Untap all creatures you control

Transmute Artifact [Antiquities] Champions of Kamigawa While it's true most DragonsSet: Antiquities Type: Sorcery Rarity: Uncommon Cost: {U}{U} Sacrifice an artifact. If you do, search your library for an artifact card. If that card's mana value is less than or equal to the sacrificed artifact's mana value, put it onto the battlefield. If it's greater, you may pay {X}, where X is the difference. If you do, put it onto the battlefield. If you don't, put it into its owner's graveyard. Then shuffle.