Historical Rules · 25 August 2017
Rule 702.36d
Official source text from the 25 August 2017 Rules release
You can’t normally cast a card face down. A morph ability allows you to do so.
Historical Rules · 25 August 2017
Official source text from the 25 August 2017 Rules release
You can’t normally cast a card face down. A morph ability allows you to do so.