So, as Tag had seen for his charms homework, the castle, clearly and obviously, needed some warming up. He decided that he'd wander into the coldest places of the castle.

Uh-huh. So, yeah. Tag would never come down here for pretty much no reason, but he needed some 'fresh' air. And he figured this place was probably freezing right now. This was the only time Tag would be nice to the slytherins.

He got out his wand and went to a corner where it seemed pretty cold. Not that the entire castle was pretty much freezing. Lifting it up, Tag said "Caelum Saepio"

There came a very very very tiny fog from Tag's wand. He shrugged at it. Eh. It wasn't like he was here to do some grand service to the snakes. His job here was done. Time to find a new place.