Éphémère
Contrecarrez le sort ciblé si aucun mana n'a été dépensé pour le jouer.
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.