This cardpool is used as extension to my Pauper cube. It is based on the ideas form Codex: Card-Time Strategy and Commander/Brawl formats. Instead of just one commander you can get up to three and swap them during the game or between games.
Reasons for custom format:
In cubes where rarity is not restricted legendary creatures can be drafted in packs and then one of them will be your commander and others can be played in your deck.
In Pauper you don't want to play with a number of uncommons/rares/mythics in a deck. Legendary creatures should be special and I personally dislike setups more complex than shuffling a cardpool. If you would draft commanders separately then Brawl module seems excessive since you can play only one commander at a time.
Core Ideas:
There are three commander cardpools in different sleeves in addtion to this cube. Each cardpool should be drafted separately [with Supreme draft rules using only single booster]. A player can have one commander from each cardpool, up to one consipracy and up to one companion.
Every commander cardpool has its own theme:
Every cardpool has specific cards for tribal-kindred strategies, poison, dungeons, artifacts, etc.
Alternatively you can just go with a small module of commanders that can be added into each booster.
Additional rules:
Your color identity is the combined color identity of all your commanders.
You may cast any of your commander as always, but only once a turn and if all other commanders are in the command zone (no commanders spam and shenanigans allowed) with exceptions for partners and companions. Commanders that might be casted from hand or graveyard works as intended.
Commanders return to a command zone face-down and cannot be casted again until they are flipped face-up. If all commanders are face-down flip them face-up.
Commander Tax is equal to 1 for partners and 2 for any other.
We are lazy so no commander damage is tracked.
Alternatively there can be just ordinary Commander swap between games or one commander during the game.
Deckbuilding rules are from Brawl format: 40 card deck / 25 life
Format specifics:
I have no final list and will rotate lots of cards from full cardpool.