Historical Rules · 23 August 2019
Rule 901.11c
Official source text from the 23 August 2019 Rules release
If a player planeswalks when there is more than one face-up plane card, that player planeswalks away from all such planes.
Historical Rules · 23 August 2019
Official source text from the 23 August 2019 Rules release
If a player planeswalks when there is more than one face-up plane card, that player planeswalks away from all such planes.