It was funny that Mo had no moral qualms about making a potion that bent the will of another person. Not the use of the potion, he absolutely had qualms about that, but the actual brewing of it was fine. For research or science or whatever. And if they used it, Mo assumed it would be a monitored thing with strict parameters. No forcing people to confess and then die for his sake or whatever.

He hadn't been able to sit next to Cat (which was weird, frankly, because they always sat together), but maybe that meant he was less likely to be distracted and more likely to avoid the unfortunate run-in with the professor... like last class. He'd come out with a perfectly utilitarian potion, but he was embarrassed that, as a seventh year, he'd had to start over.

Mo listened carefully as the professor worked through the initial steps of the potion, pulling out his cauldron and giving it (and his other tools) a thorough and magical cleaning before retrieving his ingredients from the front of the room. Lots of animal parts today, but none as noteworthy and concerning as that dragon heart had been last class. Mo gave the baby Claws a glance to make sure none of them were stressing out before grabbing the now-cleaned grater and unicorn horn and carefully grating half of it into a tidy, shimmering pile.

But he wasn't going to do anything with it? Hmmm... Mo set the bowl of unicorn horn off to one side before lighting a fire under his cauldron using Incendio. Non-verbal. His specialty. It just took a liiiiittle adjustment to get the fire on low heat, and then his attention once again turned to the professor and the instructions being printed on the board. He waited for the empty cauldron to heat, opting to retrieve the purified water from Culloden's buckets while he waited. Aaaandd... perfect. Mo added the three glasses of water carefully, so as not to spill a single drop.

Next the ten hippogriff feathers, which Mo admired in the dungeon light briefly. Hippogriff feathers were the least objectionable animal part ingredient today, since they were typically lost through molting and didn't have to harvested from a deceased creature. Could unicorns live without their horns? Maybe, but they still only had ONE. Feathers grew back. The feathers were added to the purified water. One... two... all the way to ten. Mo admired how they floated on the surface of the water for just a moment.

But only just a moment, because Mo immediately needed to start counting to ten, as instructed. And then one stir COUNTER clockwise. Then a count to twenty, and Mo stirred the potion clockwise. Again, just once. Next to thirty, and Mo stirred the potion one last time. Counter clockwise. Once. The board said it, Mo did it, and his potion was NOT GOING ANYWHERE. It was perfect, and he hoped the professor would wander along to see that he could tell his clockwise from counter clockwise, his right from his left and his... oh yes.

Moving on again. NOW it was time to add the grated unicorn horn, and Mo carefully dumped the contents of his shiny-grated-horn bowl into the cauldron. All was well in there? Mo glanced inside, but since he wasn't sure what color or consistency they were looking for, he had to imagine that lack of exploding potion was the best they could do at the moment. And what was this about an arrow? With no small amount of confusion, Mo traced an arrow with his wand, glancing up at Culloden briefly to see if that was what was intended.