Participation Prizes

Moriage-Happy Prize

The “Commander Box League” is a new way to enjoy Commander, held during the Prerelease period. Open a Play Booster box (30 packs) and build a 60-card Commander deck. Once you've joined, you can participate multiple times throughout the period and enjoy rebuilding your deck for each match.

How to Join
Please purchase one Play Booster box at the store and come to the tournament counter during the registration time above. *We recommend reserving your Play Booster box in advance. Reserve here!

Event Structure
You will have 60 minutes for deck construction. The default seating is four players per table, but depending on attendance, tables may be set for 3 to 5 players.

Commander Box League Deck Construction Rules
After players open their Play Booster box, they construct a 60-card Commander deck from the contents. Buy-a-Box and Commander promos may not be used in deck building.

Decks may include multiple copies of cards opened from the Play Booster.
Any legal commander opened is allowed.
Color identity rules in deck building are ignored; players may build decks with any colors they want, regardless of their commander's color identity. Note: commander color identity still applies when cards refer to color identity (for example, with Arcane Signet).
Players may adjust their decks between games using cards from their Play Booster box.

Rejoining After Your First Entry
Once you join, you may rejoin the league as many times as you like during the event period. After the event begin, there will be up to 60 minutes for deck building. If all participants finish early, Round 1 may begin ahead of schedule, so please arrive promptly.

Late Entry
You may join late as long as it is before the start of Round 2. Please note that your deck-building time may be shortened.