310. Planes

310.1. Plane is a card type seen only on nontraditional Magic cards. Only the Planechase casual variant uses plane cards. See rule 901, “Planechase.”

310.2. Plane cards remain in the command zone throughout the game, both while they’re part of a planar deck and while they’re face up. They’re not permanents. They can’t be cast. If a plane card would leave the command zone, it remains in the command zone.

310.3. Plane subtypes are listed after a long dash, and may be multiple words: “Plane — Serra’s Realm.” All words after the dash are, collectively, a single subtype. Planar subtypes are called planar types. A plane can have only one subtype. See rule 205.3n for the complete list of planar types.

310.4. A plane card may have any number of static, triggered, and/or activated abilities. As long as a plane card is face up in the command zone, its static abilities affect the game, its triggered abilities may trigger, and its activated abilities may be activated.

310.5. The controller of a face-up plane card is the player designated as the planar controller. Normally, the planar controller is whoever the active player is. However, if the current 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. The new planar controller retains that designation until they leave the game or a different player becomes the active player, whichever comes first.

310.6. A face-up plane card that’s turned face down becomes a new object.

310.7. Each plane card has a triggered ability that triggers “Whenever you roll {CHAOS}.” These are called “chaos abilities.” Each one is indicated by a {CHAOS} to its left, though the symbol itself has no special rules meaning.