Card
Karn, Legacy Reforged
Mana cost {5}
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 {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.
No bracket restriction: playable from bracket 1. Part of 17 known combos. 3 official rulings.
- Commander
- Legal
- Printing
- Mythic · MAT · #49
- Cheapest printing
- €12.94
- EDHREC salt
- 0.50
Bracket
- B1 Exhibition — allowed: No restriction at this bracket
- B2 Core — allowed: No restriction at this bracket
- B3 Upgraded — allowed: No restriction at this bracket
- B4 Optimized — allowed: No restriction beyond the banned list
- B5 cEDH — allowed: No restriction beyond the banned list
Why
- No Game Changer, mass land denial, extra turn, tutor or two-card combo
How Lotus Vault estimates a bracket
Bracket: Lotus Vault analysis, with Commander Spellbook flags
Combos
17 known combos.
- Karn, Legacy Reforged + Voltaic Construct + The Peregrine Dynamo
Produces: Infinite colorless mana that can't be spent to cast nonartifact spells
View on Commander Spellbook - Karn, Legacy Reforged + Lithoform Engine + Clock of Omens + Staff of Domination + Basalt Monolith
Produces: Infinite colorless mana that can't be spent to cast nonartifact spells, Infinite mana artifacts you control can produce, Infinite untap of artifacts you control
View on Commander Spellbook - Karn, Legacy Reforged + Strionic Resonator + Clock of Omens + Staff of Domination + Basalt Monolith
Produces: Infinite card draw, Infinite colorless mana that can't be spent to cast nonartifact spells, Infinite mana artifacts you control can produce
View on Commander Spellbook
Combos: Commander Spellbook
Rulings
- 2023-05-12 · Wizards of the Coast
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 · Wizards of the Coast
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 · Wizards of the Coast
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: Scryfall · Wizards of the Coast