Commander, also known as Elder Dragon Highlander, is a multiplayer format for the collectible card game Magic: The Gathering. It was created in 2011 by Sheldon Menery and a group of other players.
Commander is played with a deck of 100 cards, including a legendary creature that serves as the deck’s “commander.” The commander can be cast from the command zone, which is a special area outside of the deck. When the commander is cast from the command zone, it goes to the battlefield under its owner’s control. If the commander is put into the graveyard or exiled, its owner may pay its mana cost and two additional mana to cast it again from the command zone.