Oakey stuck close to the back of the group. He was not about to get lost no sir! Not a chance, he watched and waited for Lottie to finish putting the rune into their plank to move forward when a Unicorn trotted by. Uhhh... yeah the Professor didn't say this maze was going to have creatures in them did he? He heard Minerva mention one of them use the Patronus charm and Oakey quickly interjected. "Botros said just to shoot a spark up if we need him. I can send a patronus for good measure after." He removed his wand and pointed it straight up letting of the red sparks above his head. Then followed it quickly with "Expecto Patronum" A silvery blue large Moose flowed out of his wand and strutted off in the same direction to tell the Professor that there is a Scared Unicorn in their maze. He kept his wand out and down, "The Unicorn looks scared, no one get close."
Brilliant, taking up the rear so he wouldn't get lost also put him between this Unhappy Unicorn and his Housemates.