Karn, Legacy Reforged (Foil Etched) [March of the Machine: The Aftermath] 1st Edition Holofoil then meld them into Urza

then meld them into Urza

"Give me eight walkers

Set: Dominaria Remastered Type: Instant Rarity: Rare Cost: {U} Search your library for an instant or sorcery card

reveal Blightsteel Colossus and shuffle it into its owner's library instead

Karn, Legacy Reforged (Foil Etched) [March of the Machine: The Aftermath] 1st Edition Holofoil then meld them into UrzaSet: March of the Machine: The Aftermath Type: Legendary Artifact Creature Golem Rarity: Mythic Cost: {5} Karn, Legacy Reforged's power and toughness are each equal to the greatest mana value among artifacts you control. At the beginning of your upkeep, add C for each artifact you control. This mana can't be spent to cast nonartifact spells. Until end of turn, you don't lose this mana as steps and phases end.