Transmute Artifact [Antiquities] Elf Eat some food: Regenerate Yule

Eat some food: Regenerate Yule Ooze

Set: Sun & Moon: Shining Legends Type: Lightning Rarity: Secret Rare Retreat cost: Colorless

Set: Wizards of the Coast: Black Star Promos Type: Colorless Rarity: Black Star Promo Retreat cost: Colorless

you may exert it as it attacks

Freedom of use: Wide variety of ways to display and tilt your opened box

Transmute Artifact [Antiquities] Elf Eat some food: Regenerate YuleSet: 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 converted mana cost is less than or equal to the sacrificed artifact's converted mana cost, 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 your library.