Karn, Legacy Reforged (Extended Art) - March of the Machine: The Aftermath (MAT)

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.

• Rarity: Mythic
• #: 184
• Card Type: Legendary, Artifact, Creature
• Casting Cost: {5}