"He can wield spells of the Fourth Order, but that should be his limit," Ciaran observes, tactically. "He was only capable of slinging four Magic Missiles at a time, which suggests the limit of his power."
Tracing shapes in the air before him to organize his thoughts, he continues, "Note that although we did not witness him casting it, I suspect he is also capable of Invisibility and a detailed illusion of some kind. When we encountered him, a demon appeared and taunted us, as if summoned. However, it would have been bound to the magic circle it was ostensibly in. True thaumaturgy requires magic of higher orders than Fourth, and thus I conclude that it is most likely an illusion, so placed to give him the time necessary to cast the Minor Globe and Stoneskin prior to his attack."
He looks at his companions sternly. "And please, should we meet him again in such a state, note that he can still be grappled and smothered. Do NOT be a coward and refuse to approach."