Merlin & Diana
He replied in her tongue, easily and fluently. "I am but a wizard, milady. Others give me names and tell me tales, but in truth, for all my long millenia, I am still but a wizard."
He waved a hand above them. "The dome is potent, and the power that guards it dwarfs mine. Mayhap I could pierce it, but the power that would need to be brought forth to do so would lay all that lies within to waste. I would rather dwell here and find a better way, a less harmful to others way."