The drones were recording everything, power wavelengths, magical signatures, how various items and buildings were put together, everything. He had them avoid areas that seemed to be restricted or have active defenses, he could find what was in those later, he hoped. But he was more interested in the tower. He placed one hand on the door he had determined was best for entry, and then sighed, a touch of magic easing through the door to try and undo the lock on the other side. He would use more and more power, if the first didn't get him in, and while he would be loath to have to blast his way in, he wouldn't allow a mere door to stop him. Though he would use teleportation, phasing, dimensional movements, even an experimental technological technique to try and get through.