Historical Rules · 25 January 2019
Rule 106.4a
Official source text from the 25 January 2019 Rules release
If any mana remains in a player's mana pool after mana is spent to pay a cost, that player announces what mana is still there.
Historical Rules · 25 January 2019
Official source text from the 25 January 2019 Rules release
If any mana remains in a player's mana pool after mana is spent to pay a cost, that player announces what mana is still there.