"Brilliant! Okay, well first we need..." I blasted a hole in the ceiling, and began to transfigure a tightly-spiraling staircase to connect the floors. "Draco, you and Ginny get up there, find us supplies to make weapons, destroy the lifts, whatever else you can think of. Just because there are no Goblins up there now doesn't mean it's going to remain safe. Isolate and barricade so that this staircase is the only way they have access. I'll do the same on this floor for the same reason. It'll be a pinch-point, so if we get overrun, you can mow them down easily." Draco nodded his understanding. If it gets that bad, we'll already be dead down here. That went without saying. I turned to the Potions Master.