Bracket 4 is Optimized High-Power Commander: decks are expected to be lethal, consistent, and fast, with explosive gameplay and efficient disruption. Expect the game to end as early as turn 4—not that it always will, but that it can without feeling out of place.

READ: Bracket System WOTC Article

Think of Bracket 4 as “bring the strongest version of your deck”—fully tuned, no holds barred—without the expectation that it’s built around a cEDH tournament metagame. Bracket 5 is where the metagame and tournament mindset become the point.

Game Changers are a short list of cards that tend to warp games (fast mana, premium tutors, free interaction, snowball engines, etc.). In the official bracket framework, Brackets 4–5 can run unlimited Game Changers—the goal is clarity, so players know what they’re sitting down against.

Use brackets as pregame conversation starters:

• “Are we cool with fast mana / tutors / combos?”

• “Do we want this to feel like turn-4-capable games?”

• “Are we playing high power (MLD, stax, extra turns)?”

For Wizards-sanctioned events, players generally need authentic cards; “proxy cards” in that context are judge-issued replacements for specific tournament situations (like a card becoming damaged during the event). For store nights and meetups, it’s usually an unsanctioned / organizer policy question—ask the TO and you’ll avoid awkwardness.