Karn, Legacy Reforged

March of the Machine: The Aftermath

Karn, Legacy Reforged
  • Mana cost: {5}
  • Price USD: $10.93 (foil: $10.48)
  • CMC: 5
  • Price EUR: €9.53 (foil: €9.44)
  • Type: Legendary Artifact Creature
  • TIX: 0.03
  • Subtype: Golem
  • Edhrec Rank: 2150
  • Rarity: Mythic Rare
  • Other info: Foil and Not Foil
  • Versions: Mystery Booster 2March of the Machine: The AftermathMarch of the Machine: The AftermathMarch of the Machine: The AftermathMarch of the Machine: The Aftermath
 Other cards in this SET 
(*/*)
Karn'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.

Formats restrictions

Standard Legal Modern Legal
Vintage Legal Legacy Legal
Commander Legal Brawl Legal
Pauper Not legal Future Legal
Penny Legal Duel Legal
Oldschool Not legal

Rulings

05-12-2023
wotc
The mana produced by Karn's last ability can be spent on anything that isn't a nonartifact spell. This includes casting artifact spells, paying costs to activate abilities of both artifact and nonartifact permanents, paying ward costs, and so on.
05-12-2023
wotc
Karn's last ability isn't a mana ability, even though it adds mana. It uses the stack and it can be responded to. Use the number of artifacts you control as the ability resolves to determine how much mana to add.
05-12-2023
wotc
The ability that defines Karn's power and toughness works in all zones, not just the battlefield. As long as Karn is under your control and still an artifact, its own mana value will count. In most cases, it'll be at least 5/5.

Price trend

 
04-19-2025 $11.39 €9.29
04-16-2025 $11.27 €8.75
04-15-2025 $11.38 €8.74
04-13-2025 $11.26 €9.32
04-11-2025 $11.15 €9.34
04-10-2025 $11.18 €9.23
04-09-2025 $11.00 €9.33
04-06-2025 $11.45 €9.24
04-01-2025 $11.48 €9.61
03-31-2025 $11.07 €9.58
03-30-2025 $11.28 €9.58
03-29-2025 $10.99 €9.62
03-28-2025 $10.93 €9.68
03-27-2025 $10.99 €9.90
03-26-2025 $10.84 €9.90
03-25-2025 $10.91 €9.90
03-24-2025 $10.38 €9.91
03-23-2025 $10.55 €9.91
03-22-2025 $9.74 €9.91
03-21-2025 $9.34 €9.95