3 to 5 headed “Hydra Team Commander.”

Only precon commander decks
Each side draws and plans their turns simultaneously coordinating everything. All the standard turn sequences take place.
20 life per head (person)
Middle (head) 30 life
Outside heads can revive one time with 10 life
Returning head must exile all graveyard and nonland permanants and hand then draw 7 new cards
Middle head cannot regrow
Players can only attack directly in front of their plane
Players must transfer creatures in order to attack a different head for combat. Cannot attack after a transfer
Spells and abilities can only affect directly in front or one plane to the right or left. Middle head gets to do either side

Asking if future commander decks could have partners specifically for the hydra format.
Each commander decks would have two commanders with partner abilities allowing each head to cast another players partner while following standard casting rules etc.

5 players per team would have middle heads 30 starting life while outside has 20.