
Karn, Legacy Reforged
Legendary Artifact Creature — Golem
Karn's power and toughness are each equal to the greatest mana value among artifacts you control.
At the beginning of your upkeep, add 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.
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Commander bracket
Derived from card traits, not a ruling — bracket rules turn on how a deck intends to use a card. Bracket rules
EDHREC
Combos 17
All 17 combos.
Commander recommendations
Top synergy 50
Played far more in this commander's decks than elsewhere.
- Darksteel Forge
- Karn, Living Legacy
- Mycosynth Golem
- Darksteel Colossus
- Lodestone Golem
- Foundry Inspector
- Cloud Key
- Sculpting Steel
- Metalwork Colossus
- Blightsteel Colossus
- Wurmcoil Engine
- Cryptothrall
- Unwinding Clock
- Jhoira's Familiar
- Darksteel Citadel
- Mirrorworks
- Planar Bridge
- Shimmer Myr
- Scrap Trawler
- Platinum Angel
- Cityscape Leveler
- Mind's Eye
- Steel Hellkite
- Myr Retriever
- Steel Overseer
- Walking Ballista
- Karn, the Great Creator
- Treasure Vault
- Platinum Emperion
- Nettlecyst
- Kuldotha Forgemaster
- Meteor Golem
- Darksteel Juggernaut
- Memnarch, the Warden
- Cybermen Squadron
- Stonecoil Serpent
- Urza's Factory
- Staff of Domination
- Inventors' Fair
- Myr Battlesphere
- Karn, Scion of Urza
- Triplicate Titan
- Buried Ruin
- Liberator, Urza's Battlethopter
- Krang, Utrom Warlord
- Colossus of Akros
- Ultron, Artificial Malevolence
- Manifold Key
- Horizon Stone
- Phyrexian Triniform
Most included 50
Highest share of decks running them, distinctive or not.
- Sol Ring
- Forsaken Monument
- Foundry Inspector
- Urza's Mine
- Urza's Tower
- Urza's Power Plant
- Mystic Forge
- Wastes
- Darksteel Citadel
- All Is Dust
- Thran Dynamo
- Buried Ruin
- Unwinding Clock
- Shrine of the Forsaken Gods
- Sculpting Steel
- Palladium Myr
- Cloud Key
- Ugin, the Ineffable
- Jhoira's Familiar
- Reliquary Tower
- Mind Stone
- Darksteel Forge
- Liberator, Urza's Battlethopter
- Inventors' Fair
- War Room
- Everflowing Chalice
- Null Elemental Blast
- Rogue's Passage
- Thought Vessel
- Metalwork Colossus
- Urza's Workshop
- Mycosynth Golem
- Blightsteel Colossus
- Urza's Cave
- Mind's Eye
- Hedron Archive
- Scrap Trawler
- Tomb of the Spirit Dragon
- Urza's Saga
- Solemn Simulacrum
- Meteor Golem
- Karn, Living Legacy
- Steel Overseer
- Shimmer Myr
- Temple of the False God
- Manifold Key
- Myr Retriever
- Darksteel Colossus
- Basalt Monolith
- Cryptothrall
Format legality
Rulings
- 2023-05-12
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.
- 2023-05-12
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.
- 2023-05-12
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.