There were loads of ways to keep warm, if one was creative and willing to occasionally look a bit silly. Like wearing six or seven layers, or sitting around in the common room wearing a hat and scarf, or trying to read a text or write an essay wearing gloves. And at this point, Mo just didn't care... he wanted to be warm.

"I've been using Incendio to keep the fire roaring in the fireplace in the Common Room, Professor." Which only did so much, but it was a good place to start.