Historical Rules · 13 July 2013
Rule 400.4b
Official source text from the 13 July 2013 Rules release
If a plane, phenomenon, vanguard, or scheme card would leave the command zone, it remains in the command zone.
Historical Rules · 13 July 2013
Official source text from the 13 July 2013 Rules release
If a plane, phenomenon, vanguard, or scheme card would leave the command zone, it remains in the command zone.