Karn, Legacy Reforged (Retro) [March of the Machine: The Aftermath] G-30 Exhausting a wizard can be

Exhausting a wizard can be exhausting work

except "Kashtira Riseheart"

+ {1} — Choose a creature you control

Set: World Championships 2008 Type: Water Rarity: Promo Retreat cost: Colorless

[All Turns][Once Per Turn] When an opponent's Digimon is deleted

Karn, Legacy Reforged (Retro) [March of the Machine: The Aftermath] G-30 Exhausting a wizard can beSet: 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.