Commander Draft is an option for a different style of Commander game. It consists of a draft (a style of limited play where players choose cards from sealed booster packs to build their decks) followed by a multiplayer game. The Commander Draft option uses Commander Legends booster packs by default.
January 16, 2016 · Oath of the Gatewatch
rule 903.13a not present in this release
July 17, 2015 · Magic Origins
A player that’s been dealt 21 or more combat damage by the same commander over the course of the game loses the game. (This is a state-based action. See rule 704.)
June 17, 2011 · Commander 2011
rule 903.13a not present in this release
April 1, 2011 · Duel Decks: Knights vs. Dragons
A player that's been dealt 21 or more combat damage by the same commander over the course of the game loses the game. (This is a state-based action. See rule 704.)
February 4, 2011 · Mirrodin Besieged
A player that’s been dealt 21 or more combat damage by the same commander over the course of the game loses the game. (This is a state-based action. See rule 704.)