https://magic.wizards.com/en/news/announcements/commander-brackets-beta-update-october-21-2025

2025.10.22
https://www.youtube.com/watch?v=vHcbbtCzXYE
What's important:
https://youtu.be/vHcbbtCzXYE?t=752

Updated list:
https://moxfield.com/commanderbrackets/gamechangers
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What Are Commander Brackets?? System Rundown and Q&A! | Magic: The Gathering MTG
https://www.youtube.com/watch?v=qNu18Quax7Q
https://magic.wizards.com/en/news/announcements/introducing-commander-brackets-beta

https://www.youtube.com/watch?v=FQdDZJHl6Ls

Sideboard: Mass land denial

Brackets:
1 Exhibition - ultimate casual decks
  - no Game Changer cards
  - no intentional 2 card infinite combos
  - no mass land denial
  - no extra turn spells
  - tutors should be sparse
2 Core - the "Precon" bracket, deck not fully optimized, generally don't win the game out of nowhere, but will likely have a clear winner by turn 10 or so
  - no Game Changer cards
  - no intentional 2 card infinite combos
  - no mass land denial
  - low number of extra turn spells, not intended to chained in succession or looped
  - tutors should be sparse
3 Upgraded - competitive decks start here, upgraded pecons; game are faster
  - up to 3 cards from Game Changer list
  - 2 card combos are allowed, but NOT early game: no Thassa's Oracle into Demonic Consultation
  - no mass land denial
  - extra turn spells are allowed, not intended to chained in succession or looped
4 Optimized - no restrictions
5 CEDH - winning is #1 focus, games can very well end in turn 1 or 2