Richmond's Scheme
The Box's shape was easy to envision, but it was harder to hold. The Sphere had been smaller and lighter, whereas the Box was much larger and heavier.
Draco could feel a palpable weight on his mind as he 'held' the Box. What was surprising was that it was empty, yet Draco felt like someone placed a full water barrel on his head.
Originally, Draco had wondered why Richmond had made him hold the shape of these two ethereal objects. It was easy enough to envision them, but this was not where the difficulty lay.
So why was time being wasted on it?
Now, he had an inkling of an idea. It seemed that there was more to this beginner stage in spell formulation. Even though it was covered by the Focus stat, it still required some proper training before it could be used at will.