Twilight began by scanning through the magical frequencies around her. She was familiar enough with Fleur to know how her magic felt, so all she had to do was find an unfamiliar magical presence, and eliminate it. Twilight almost fainted when she found it, and the itching in her horn intensified until it felt like her horn was on fire. The magic affecting Fleur wasn't just in her. It was everywhere, permeating every inch of the air and building around them. Whatever spell was affecting Fleur was mean to affect everypony in the keep all the time.