Karn, Legacy Reforged [March of the Machine: The Aftermath] M-20 "I write upon clean white

"I write upon clean white parchment with a sharp quill and the blood of my students

Other Treefolk and Forests you control have indestructible

Then the walls began to glow

then sacrifices seven permanents

Set: Power Keepers Type: Water Rarity: Ultra Rare Retreat cost: 1 [1WW] Whirlpool (40)

Karn, Legacy Reforged [March of the Machine: The Aftermath] M-20 "I write upon clean whiteSet: 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.