Historical Rules · 7 October 2022
Rule 901.3a
Official source text from the 7 October 2022 Rules release
A planar die is a six-sided die. One face has the Planeswalker symbol {PW}. One face has the chaos symbol {CHAOS}. The other faces are blank. 901.4.All plane and phenomenon cards remain in the command zone throughout the game, both while they’re part of a planar deck and while they’re face up.