"Hmm," says Helen. "I'm imagining that and it just looks like a big pill from the outside. How about something more like this?"

She conjures an illusion: an octagonal courtyard enclosed by a thick wall, with circular towers at the corners and a much larger circular tower in the middle. Four of the outer towers have outward-facing doors, and all eight have doors facing into the courtyard; the main tower has one big door facing north, in line with the north outer door. Everything is made of wood; the octagonal wall linking the outer towers also has spiky glittering ice running along the top.