Historical Rules · 10 August 2018
Rule 602.4
Official source text from the 10 August 2018 Rules release
Activating an ability that alters costs won’t affect spells and abilities that are already on the stack.
Historical Rules · 10 August 2018
Official source text from the 10 August 2018 Rules release
Activating an ability that alters costs won’t affect spells and abilities that are already on the stack.