Мгновенное заклинание
Отмените целевое заклинание, если на его разыгрывание не было потрачено никакой маны.
Nix checks whether any player paid mana to cast the spell, not whether its current controller did. If Commandeer is cast on a spell, then Nix is cast on that spell, Nix won’t counter it unless the player who originally cast that spell spent no mana to cast it.