Neil's first instinct was to deny Celestia's request and slam the door closed. However, the fact that it was a formal summons gave him pause. Thanks to Bulk, he knew the consequences of such an action. If he was lucky, he could take the guard in front of him by surprise. After that, however? He was absolutely fucked. If he wasn't fortunate, all the Unicorn had to do was grab him with an aura and drag him through the castle to the throne room.