Transmute Artifact [Antiquities] Darksteel Set: Unlimited Edition Type: Artifact

Set: Unlimited Edition Type: Artifact Rarity: Rare Cost: {4} All Swamps are 1/1 black creatures that are still lands

It can't be regenerated

Set: Dominaria Prerelease Promos Type: Legendary Artifact Rarity: Mythic Cost: {0} {T}: Add one mana of any color among legendary creatures and planeswalkers you control

Set: Legends Type: Creature — Elemental Spirit Rarity: Rare Cost: {1}{W}{W} Flying

Set: Shadowmoor Type: Land Rarity: Rare {T}: Add {C}

Transmute Artifact [Antiquities] Darksteel Set: Unlimited Edition Type: ArtifactSet: 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.