Commander Brackets
Brackets are an official system for categorizing Commander deck power levels. They exist to standardize the pregame conversation — instead of "my deck is a 7" (which means different things to different people), you state a bracket number with defined constraints.
The five brackets
| Bracket | Name | Description |
|---|---|---|
| 1 | Exhibition | Ultra-casual. Theme-focused decks, no Game Changers, no two-card combos. |
| 2 | Core | Precon power level. No Game Changers. Functional but unoptimized. |
| 3 | Upgraded | Stronger than precons. Up to 3 Game Changers allowed. Most LGS play. |
| 4 | Optimized | High-powered. No restrictions beyond the banlist. |
| 5 | cEDH | Maximum optimization. Tournament-level play. |
Bracket-specific restrictions
Brackets 1-2:
- No Game Changers
- No two-card infinite combos
- No mass land denial (effects that destroy/exile/bounce 4+ lands per player without replacement)
Bracket 3:
- Up to 3 Game Changers
- No mass land denial
- Combos should require 3+ cards or only be assembled late game (turn 8+)
Brackets 4-5:
- No restrictions beyond the banlist
- All Game Changers allowed
- Any combo density is acceptable
Game Changers
Game Changers are a list of approximately 40 cards that significantly warp games when included. Running any Game Changers card places your deck at Bracket 3 minimum. Bracket 3 allows up to 3; Bracket 4+ allows unlimited.
The full list and details are on the Game Changers page.
Mass land denial
Effects that destroy, exile, or bounce 4+ lands per player without providing replacement lands are banned in Brackets 1-3. This includes:
- Armageddon, Ravages of War, Catastrophe
- Jokulhaups, Obliterate
- Cyclonic Rift does NOT count (it bounces nonland permanents)
How brackets work in practice
Before a game, each player states their bracket. If everyone's at Bracket 3, play. If one player is at Bracket 4 and others are at 2, that player should switch decks or the group should discuss expectations.
Brackets don't replace the Rule Zero conversation. They supplement it. Brackets give you a starting point. Rule Zero handles the specifics your group cares about.
Where things stand
The bracket system was introduced in late 2024 and has been through several updates. The Feb 2026 update added Farewell to the Game Changers list and clarified hybrid mana's interaction with color identity. The system is still evolving, but the core framework is stable.
Check the official Commander Rules Committee announcements for the latest updates.