This is a custom Commander Cube version of Vintage Draft.
Just like in newest Commander draft rules, if you have 2 Legendary Creatures or Planeswalkers that have 1 or less colors, you can play them as your commanders as if they would have Partner.
On top of this you may choose a Planeswalker to be your Oathbreaker instead, if you do so, you cant choose a Partner to your Planeswalker, but you may choose a Signature spell that is in colors of your Commander.
There are 5 legendary creatures on each color as well as 3 planeswalkers
There is also 2 planeswalkers and 2 legendary creatures on each 2 color guild. On top of that there is 4 colorless legendary creatures and 2 planeswalkers. And some 3+ colored legendary creatures.
But again just like usual Commander draft, 3 boosters of 20 cards. Pick 2 and pass. Etc. Minimum 60 card deck including Commanders/Oathbreakers and Signature Spells.
There is a possible addon if not using Twist. This can only be used when the draft is with 4 players. There is a pool of Freebies, including mana rocks, fetches and duals.
It is important to note that while you can use Draft Matters cards as 16th slot you will not be able to use the Universe Beyond pack, so flip both Booster tutor and Loreseeker
While my final Excel is still on the works, atm it looks like after draft, there would be 2 full cycles of Fetches and Duals to be shared to players, as well as 4 copies (1 pod) of Gemstone Caverns, Mana Crypt, Mana Vault, Mox Diamond and Chrome Mox