Historical Rules · 13 November 2015
Rule 601.4
Official source text from the 13 November 2015 Rules release
Casting a spell that alters costs won’t affect spells and abilities that are already on the stack.
Historical Rules · 13 November 2015
Official source text from the 13 November 2015 Rules release
Casting a spell that alters costs won’t affect spells and abilities that are already on the stack.