The formerly puffy white cloud was now QUITE large and QUITE ferocious looking, and yet it still wasn't producing any snow. It wasn't producing anything, actually, and Mo frowned at it as he continued to crank his wand. "Stiricidium Nubila" ...? Say it more? Snow, please?

Mo growled as he cast, swiping at the angry cloud with one hand and feeling a little tingle in his fingers as he did so. Cold and damp. "SNOW," Mo ordered the cloud, and it did. Almost on cue, actually. First a few small flakes, and then they came more quickly, until Mo had fat clumps of flakes littering his square of floor. "I MADE SNOW."