There are a few changes to my cube

It follows brawl rules, so that means planeswalkers can be your commander and there is no commander damage.

The draft will consist of 3 packs of 21 cards to build a 60 card deck.

There are legendary creatures in the cube with companion. They can be your Commander or be in the 59, but they cannot be your companion.

There are also custom cards called regalia(that I do not know how to add to cubecobra sadly) that can do a number of things. You can only have/use one type of each regalia.

Crowns allow you to add colors to your commanders color identity, allow your commander to do commander damage, or allow you to make a 50 card deck in you commander is 2 or less colors.(I believe this helps give support to 2 colored decks)

Scepters allow you to search the undrafted cube for specific cards such as artifacts, auras, etc.

Tattoos allow you to add different effects that the other two regalias do not such as allowing to legendary to be partner commanders or make a non-legendary creature be able to be your commander.

The only commander that has special rules attached to it is The Reaper King. When you draft the Reaper King, you can designate 5 colorless artifact creatures to be scarecrows in addition to its other types.

If you have any questions or suggestions please let me know, Thanks!