Your appearance gathered quite a bit of attention. On your way underground again, you take a few casual swipes at people in the houses, killing those you touched instantly. That ought to spread some fear. The wizards are flying in your direction, obviously via the fly spell. However, by the time they reach where you were, you will already be underground.
You wait there for a little less than half a minute, trying to find the best place to surface. The men are all running in the direction of your last appearance, but they are much slower than the wizards, and of course, have to worry about city streets. You can't seem to single out any of the sorcerers.
So you rise up, and breathe in the faces of two dozen or so healthy young men. Not healthy for long though... about half fail their save and dry up instantly like a corpse, your breath weapon sucking all thier life water away and scattering it into the void.
You descend back underground even as the forces of good gather themselves to counterattack. And you wait.