Historical Rules · 1 October 2009
Rule 500.4
Official source text from the 1 October 2009 Rules release
When a step or phase ends, any unused mana left in a player's mana pool empties. This turn-based action doesn't use the stack.
Historical Rules · 1 October 2009
Official source text from the 1 October 2009 Rules release
When a step or phase ends, any unused mana left in a player's mana pool empties. This turn-based action doesn't use the stack.