Karn, Legacy Reforged
Tracked across real Commander games played through TurnZero HQ.
What it does
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.
Combos with Karn, Legacy Reforged
The lines this card is part of, what it needs alongside it, and what the cards do together. An infinite result is the one that moves a deck's bracket.
- Voltaic Construct The Peregrine Dynamo Infinite
- Infinite colorless mana that can't be spent to cast nonartifact spells
- Strionic Resonator Filigree Sages Chromatic Orrery Infinite
- Infinite card draw
- Infinite colored mana
- Infinite colorless mana
- Infinite colorless mana that can't be spent to cast nonartifact spells
- Infinite untap of artifacts you control
- Infinite draw triggers
- Lithoform Engine Filigree Sages Chromatic Orrery Infinite
- Infinite card draw
- Infinite colored mana
- Infinite colorless mana
- Infinite colorless mana that can't be spent to cast nonartifact spells
- Infinite untap of artifacts you control
- Infinite draw triggers
- Virtue of Knowledge // Vantress Visions Naru Meha, Master Wizard Eldrazi Displacer Infinite
- Infinite blinking
- Infinite colorless mana
- Infinite copies of abilities you control on the stack
- Infinite creature ETB
- Infinite creature LTB
- Infinite magecraft triggers
- Infinite blinking of most creatures
- Virtue of Knowledge // Vantress Visions Naru Meha, Master Wizard Emiel the Blessed Infinite
- Infinite blinking
- Infinite colorless mana
- Infinite copies of abilities you control on the stack
- Infinite creature ETB
- Infinite creature LTB
- Infinite magecraft triggers
- Virtue of Knowledge // Vantress Visions Dualcaster Mage Eldrazi Displacer Infinite
- Infinite blinking
- Infinite colorless mana
- Infinite copies of abilities you control on the stack
- Infinite creature ETB
- Infinite creature LTB
- Infinite magecraft triggers
- Infinite blinking of most creatures
- Virtue of Knowledge // Vantress Visions Dualcaster Mage Emiel the Blessed Infinite
- Infinite blinking
- Infinite colorless mana
- Infinite copies of abilities you control on the stack
- Infinite creature ETB
- Infinite creature LTB
- Infinite magecraft triggers
- Karn, Silver Golem Strionic Resonator Voltaic Construct Infinite
- Infinite colorless mana that can't be spent to cast nonartifact spells
- Infinite untap of artifact creatures you control
Showing the 8 shortest and most explosive. This card appears in more than these. Follow any of them through to Commander Spellbook to browse the rest.
Combo data from Commander Spellbook, the community-maintained database of Magic combos. Mirrored nightly.
Rulings
3 official rulings, in the order Wizards published them.
- 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.
- 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.
Rulings are Wizards of the Coast's own, mirrored from Scryfall and refreshed nightly.
As a commander
Decks built with Karn, Legacy Reforged in the command zone.
Published decks
Decklists players have published with Karn, Legacy Reforged in the command zone, newest first. A deck that has been played carries the win rate it earned in real tracked games.
- Karn 0 games —
In the 99
Every deck whose current list includes Karn, Legacy Reforged, whatever its commander.
Most played under
| Commander | Decks | Games | Win rate |
|---|---|---|---|
| Aloy, Savior of Meridian | 2 | 0 | — |
Colors it shows up in
- Simic 2 decks
Karn, Legacy Reforged price history
The March of the Machine: The Aftermath #49 printing, as Scryfall reports the TCGplayer market. Updated nightly. Click any version below to chart its price.
Every recorded price change
| Date | Non-foil | Foil |
|---|---|---|
| Nov 11, 2026 | $19.06 | $22.38 |
| Nov 10, 2026 | $18.98 | $22.38 |
| Nov 9, 2026 | $18.94 | $22.38 |
| Nov 7, 2026 | $18.98 | $22.38 |
| Nov 5, 2026 | $19.47 | $22.38 |
| Nov 4, 2026 | $19.45 | $22.68 |
| Nov 3, 2026 | $19.03 | $22.68 |
| Oct 31, 2026 | $18.83 | $22.68 |
| Oct 30, 2026 | $18.83 | $22.53 |
| Oct 29, 2026 | $18.75 | $22.53 |
| Oct 27, 2026 | $18.35 | $22.34 |
| Oct 26, 2026 | $18.06 | $22.24 |
| Oct 25, 2026 | $18.31 | $22.24 |
| Oct 24, 2026 | $18.31 | $22.23 |
| Oct 23, 2026 | $18.60 | $22.23 |
| Oct 22, 2026 | $18.80 | $22.23 |
| Oct 21, 2026 | $18.73 | $22.23 |
| Oct 20, 2026 | $18.59 | $22.20 |
| Oct 19, 2026 | $18.78 | $22.20 |
| Oct 18, 2026 | $19.05 | $22.20 |
| Oct 17, 2026 | $18.93 | $21.51 |
| Oct 16, 2026 | $18.99 | $21.51 |
| Oct 15, 2026 | $19.14 | $21.23 |
| Oct 14, 2026 | $19.47 | $21.23 |
| Oct 13, 2026 | $19.45 | $21.23 |
| Oct 12, 2026 | $19.51 | $21.23 |
| Oct 11, 2026 | $19.85 | $21.23 |
| Oct 10, 2026 | $19.76 | $21.23 |
| Oct 8, 2026 | $19.80 | $20.94 |
| Oct 7, 2026 | $19.77 | $20.94 |
| Oct 6, 2026 | $19.61 | $20.94 |
| Oct 5, 2026 | $19.57 | $20.94 |
| Oct 4, 2026 | $19.52 | $20.94 |
| Oct 2, 2026 | $19.46 | $20.83 |
| Sep 30, 2026 | $18.98 | $20.83 |
| Sep 29, 2026 | $18.55 | $20.83 |
| Sep 28, 2026 | $19.32 | $20.83 |
A row is recorded only on nights the price moved, so each price held until the row above it.
Every version of Karn, Legacy Reforged
5 printings, newest first. Prices are the market figures Scryfall publishes, refreshed nightly. A printing with no figure shows a dash rather than a zero, because Scryfall publishes none for some of them. Click a card's art to chart that version's price above.
- Foil
- $47.15
Etched
March of the Machine: The Aftermath
- Etched
- $22.53
Extended Art
March of the Machine: The Aftermath
- Normal
- $19.85
- Foil
- $22.43
March of the Machine: The Aftermath
- Normal
- $19.06
- Foil
- $22.38
Showcase
March of the Machine: The Aftermath
- Normal
- $20.51
- Foil
- $20.23
Prices from Scryfall, which tracks the TCGplayer and Cardmarket markets. They move daily and are a guide rather than a quote. Search TCGplayer for Karn, Legacy Reforged. It runs a name search across every version, which covers the printings TCGplayer publishes no direct link to.
Aggregated from Commander games tracked in TurnZero HQ. Every figure counts decks and games only. No individual deck list, player or playgroup is identified. Win rates are withheld below 5 completed games, where the sample is too small to mean anything.
