Historical Rules · 23 July 2021
Rule 605.3c
Official source text from the 23 July 2021 Rules release
Once a player begins to activate a mana ability, that ability can’t be activated again until it has resolved.
Historical Rules · 23 July 2021
Official source text from the 23 July 2021 Rules release
Once a player begins to activate a mana ability, that ability can’t be activated again until it has resolved.