Historical Rules · 11 November 2016
Rule 702.36d
Official source text from the 11 November 2016 Rules release
You can’t normally cast a card face down. A morph ability allows you to do so.
Historical Rules · 11 November 2016
Official source text from the 11 November 2016 Rules release
You can’t normally cast a card face down. A morph ability allows you to do so.