Historical Rules · 26 August 2016
Rule 508.1h
Official source text from the 26 August 2016 Rules release
If any of the costs require mana, the active player then has a chance to activate mana abilities (see rule 605, “Mana Abilities”).
Historical Rules · 26 August 2016
Official source text from the 26 August 2016 Rules release
If any of the costs require mana, the active player then has a chance to activate mana abilities (see rule 605, “Mana Abilities”).