Historical Rules · 25 January 2019
Rule 702.36d
Official source text from the 25 January 2019 Rules release
You can't normally cast a card face down. A morph ability allows you to do so.
Historical Rules · 25 January 2019
Official source text from the 25 January 2019 Rules release
You can't normally cast a card face down. A morph ability allows you to do so.