When a player leaves the game, objects that player owns in the ante zone do not leave the game. This is an exception to rule 800.4a. See rule 407, “Ante.”
May 3, 2019 · War of the Spark
In a Planechase game, if the player designated as the planar controller would leave the game, instead the next player in turn order that wouldn’t leave the game becomes the planar controller, then the old planar controller leaves the game. See rule 309.5.
January 25, 2019 · Ravnica Allegiance
In a Planechase game, if the player designated as the planar controller would leave the game, instead the next player in turn order that wouldn't leave the game becomes the planar controller, then the old planar controller leaves the game. See rule 309.5.
June 5, 2017 · Commander Anthology
In a Planechase game, if the player designated as the planar controller would leave the game, instead the next player in turn order that wouldn’t leave the game becomes the planar controller, then the old planar controller leaves the game. See rule 309.5.