Bab 235: Normal night

The drive from the prison to Aetherpeak took six hours, which included a slight pause that they had to take when they were attacked by an Apparition curse that appeared as a Malevolent wind.

As if being attacked by wind was not unusual enough, that was the day he learned that even wind can suffer illusions. Nero did not mention how absurd that was, since he did not want to give his father any satisfaction. He was, however, beginning to understand why he so rarely encountered danger growing up.

The very nature of Edward's ability was such that even if he was using it, no one would ever know. After all, Edward could just create an illusion of himself not using any ability.