Aiden watched attentively as Professor Carlton performed the incantation with ease and then proceeded to pop the bubble around her head just seconds after it had appeared. When she urged the students to try it themselves, he pulled his wand out from his pocket and pointed the tip of it at his face before moving it in a counter-clockwise rotation. "Viseo Ebullio," he said, but a small bubble just seemed to sprout from the wand and pop right away. Ehh, okay. He'd keep practicing.