Historical Rules · 27 September 2013
Rule 605.5
Official source text from the 27 September 2013 Rules release
Abilities that don't meet the criteria specified in rules 605.1a-b and spells aren't mana abilities.
Historical Rules · 27 September 2013
Official source text from the 27 September 2013 Rules release
Abilities that don't meet the criteria specified in rules 605.1a-b and spells aren't mana abilities.