Supervillain rumble

Casual multiplayer format

This format is otherwise same as any casual multiplayer format, but each player has their scheme deck.

I think this would work also with 1 vs 1 but then each player should design their scheme deck knowing this.

Archenemy [format]

Arcenemy is 1 vs team of players format

The person playing alone against others will have special Archenemy deck consisting minimum 20 scheme cards where you can have maximum 2 of same card.

Archenemy plays first and starts with 40 lives when other players playing against him start with 20 lives

On the beginning of archenemy’s precombat main phase, that player moves the top card of their scheme deck off that scheme deck and turns it face up. This is called “setting that scheme in motion.”

Iron man [additional rules for limited]

The main idea of Iron man rule is that each time card is placed on graveyard, that card is ripped in pieces. So if you play an spell that card is removed from your deck for good, you will not have that card in your next game and you need to replace it with something else from your draft/sealed pool, and when nothing else remains just add more basic lands.

The way you draft cards and how many cards each player has can change depending on the organisers of the game. I think the most common would be to play with a pile, draft or sealed.

I think in theory it would be possible to take this rule and just remove the cards from game if you are playing with a cube or you are thinking to give the cards that would be destroyed to someone else but it does not have the feel to it.