"Don't care if they know after the fact." The Soldier looks immensely satisfied. No one else has come up with any potential ways to protect themselves from things that aren't actually real. This might just do it. They offer, by way of explanation, "If the green-eyes attack again, maybe this can keep them from giving us hallucinations. From frightening and distracting us. Give us time to kill them before they do." They don't know what Shadow or Dusk level means, but it doesn't matter. This could give them an edge if the green-eyes do in fact forget about their promise to not try and kill them all again.

Of course, only Sora can use it. Gonna have to keep the kid alive. (Not that we weren't going to do that, anyway. Well, of course.)