The illusion classroom is almost suspiciously normal, being the cleanest of any you have been in so far, and tucked away in a part of the library quarter with large white walls. Three rows of three students sit politely in a square before a long flat desk, some with books out, but none seeing anything notable. Even the guest professor seems on her best behavior, which is doubly unusual because you've had another class with Archmage Hana and she did not simply walk into the room last time.
"Hello, class. My name is Hana, I'm the current dean of illusions here at the academy, but elven titles are a mess nobody wants to wade through so it's fine with me if you stay casual," she begins. "Illusions are one of the most maligned schools of magic, and it's true that they have a number of weaknesses. And that they're far more effective against your fellow man than against monsters, which doesn't typically foster confidence. They can even often be dispelled with a simple touch, which doesn't exactly seem powerful, and most of the 'legendary feats' of magic performed with illusions consist of either morally terrible activities or replicating things other schools could do more easily."
The professor is much more animated than she was in the, er, Magic Laziness class. Pacing about the front of the classroom, and pointing with a small wooden wand at various students as she punctuated her points with jabs. There's something bright and... laughing? In her pale eyes that wasn't in them in the last class.
"Well, it's bunk! Illusions are amazing, and you're all skipping the usual lesson today so I can tell you three reasons why. Reason one is personal amusement. Every other school of magic has few to no spells it's ENTIRELY safe to use recreationally. Even soulsight, forever looking inward, doesn't have anything you can cast on yourself 'just because you're bored' without potentially risking long-term psychological damage. Not so with illusions. If you have free time and know the Lotus Land spell, just make sure to set a time limit on it first and enjoy an instant vacation."
A few students around the classroom look especially hungry at this knowledge, though you personally, are unclear how well it would mix with the 'doesn't work well on monsters' part.
"Reason two is training. There's no better school than illusions for training the fundamentals. Want to practice chain casting until you drop, do it with an illusion, being benign and visually obvious will let you pick out when spells start to warp with no danger. Heck, you want to train something completely unrelated to magic? You can conjure yourself an illusory swordfighter and have an instructor or fencing partner on your off time. You didn't hear it from me, but the Inquisitors actually make extensive use of illusion magic to train prospective recruits in resisting torture and corruption."
In... inquisitors? You quickly look around the classroom, you see a few curious eyes, some stoic nods, two people looking even hungrier, and precisely nobody else who responds as if totally unfamiliar with the term.
"Reason three is POWER. Yeah I know, you thought I was just chicaning you, phrasing all the ways that illusion spells being useless could count as a positive, well tough. At the highest level, illusions actually, have some of the highest return of investment from effort spent to effect gained. The arts of Shadow, Mirror, and Haze are all considered advanced evolutions of the school, and you'll be hard-pressed to find a knight of any country who doesn't fear a Mirrormage, while Shadowmages can often replicate the feats of any other magic user. Not perfectly, don't get me wrong, a Necromancer will always be better at Necromancy than an Illusionist, but versatility matters kids."
"As for Haze magic... well... watch this."
The professor waves her hands in an extravagant gesture, sending motes of light to the four corners of the classroom as reality begins to peel away. Smoke pours from the violent violet light, covering everything as a ripple of stars crosses the wall, wood rapidly replaced with a picture of the night sky through a low hanging fog.
"Haze magic can do amazing things with mist, in fact, you'll probably hear at some point that every school of magic has their own method of transport, and this is ours. Behold! The Misty Path!"
The professor points her wand to the ex-wall, and a long brick road extends into the space where a building once was, tracking miles into the distance... before there's an impossibly distant 'thump'.
"...Thump?" the professor asks.
Rapidly the path starts crumbling away, bricks in the distance of clear space falling into the void as Hana's eyes go wide and she starts shaking her wand.
"Nobody panic! This happens sometimes. When connecting two places sometimes something on the other side comes through, but you can rest assured that a fully qualified..."
She trails off as the bridge rapidly breaks more and more, an indistinct, shadowy figure rushing across it, not breaking the path, but USING it, heavy footfalls shaking the classroom even through the portal as it dashes at impossible speeds.
"A fully qualified wizard can handle anything, I just have to add on a layer of barrier protection and voila!"
Hana mutters under her breath and a pane of what looks like glass appears over the wall, only to almost immediately shatter as an enormous, scaled black hand reaches forth, light glinting off of claws of jet as it squeezes around the elven professor and she lets out a squeak.
Her mouth opens to speak... then her body compresses and nothing comes out, neck falling limp as she gets yanked back through the portal, the stars peeling back as she goes.
You don't even really have time to parse what happens, in fact, you almost have a heart attack as you feel something touch your head. Feeling like you can HEAR your new bones creak as you look up...
To see the professor walking around the classroom amusedly tousling the hair of each of the students, walking from desk to desk across three rows of three...
Then passing through another wall, which fades away, as the classroom opens up to a much larger affair of six rows of six.
"And that brings me to the fourth advantage of Illusion. The unexpected. NOBODY is ever as prepared for illusions as they think they are. Even if a single touch would dispel it, even if the only thing they know about you is that you're good at illusions, nobody is ever prepared to have the basic notions of reality yanked out from under them. The path to mastering illusions is a long one. And difficult. I won't argue that at all. More than magic, if you want to be a true Illusionist, you'll have to master acting and psychology, sound design, and artistry. You'll have to know yourself and others. It's why we actually run a theater around here, so to get you better used to steering yourself and your audience. But if you can do it, well..."
Hana leans casually against open air, flicking her wand as four desks at the head of four fake classrooms disappear to reveal one large podium in one.
"Five senses stand between every living thing and the rest of the world. I can teach you how to steal eight of them."
The professor might be a bit of a drama queen.