Historical Rules · 8 July 2017
Rule 602.4
Official source text from the 8 July 2017 Rules release
Activating an ability that alters costs won’t affect spells and abilities that are already on the stack.
Historical Rules · 8 July 2017
Official source text from the 8 July 2017 Rules release
Activating an ability that alters costs won’t affect spells and abilities that are already on the stack.