Historical Rules · 22 July 2016
Rule 602.4
Official source text from the 22 July 2016 Rules release
Activating an ability that alters costs won’t affect spells and abilities that are already on the stack.
Historical Rules · 22 July 2016
Official source text from the 22 July 2016 Rules release
Activating an ability that alters costs won’t affect spells and abilities that are already on the stack.