Draiss considers the problem, before shaking his head, saying, "I can cast it three more times, but then I will be less that particular spell power until tomorrow. Also, there is a floor above this one, but my eyes returned before they explored that level. So one of us, I volunteer myself, can stay below, and just drop fireballs all over the entrance of the keep. Could that work? Since I am not a very subtle mage, sadly."