Karn, Legacy Reforged - [Etched Foil] March of the Machine: The Aftermath (MAT) Legendary most exciting Commander cards this

most exciting Commander cards this side of Faerûn

and a traditional foil Mystical Archive Mythic Rare can be found in <1% of packs

Carefully following the thaumatic compass Bolas had given her

you may draw a card

This effect can't reduce the mana in that cost to less than one mana

Karn, Legacy Reforged - [Etched Foil] March of the Machine: The Aftermath (MAT) Legendary most exciting Commander cards thisKarn, 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.