Canadian Highlander
EDH with two teams of 3.
Open a pack (don't look) and shuffle in 15 lands.
Commander where the general must be Standard-legal
Similar to Commander but played with 50-card decks. No cards with casting cost greater than 3 are used.
EDH with six roles that have special missions.
Modified life totals and banlist
Players prepare decklists of seven or fewer cards and games are deterministic.
The game has been played weekly on mtgsalvation (with a few interludes) since 2005.
intended to be unsolvable, this format requires both players to agree to battle for three turns at a time
commons only
Casual Formats from the mothership
Roles for Commander