Noah looked up as the door swung open and Professor Bruno walked in.
The man was nothing like Geldrin.
Where the Stone-tier professor had been bitter and clipped, Bruno’s energy filled the room like a spark waiting for kindling.
His sandy hair was wild, his robe slightly askew, and his eyes shone with the zeal of a man who lived for what he taught.
He clapped his hands once, the sound echoing loudly, and the wards around the room flickered in response.
"Thresholds!" He bellowed, grinning as if the word itself was a spell. "That’s what today is about."
"Every spell has one. Every mage has one. And if you don’t know yours, you’ll burn yourself out, or worse, tear yourself to pieces."
The students straightened immediately. Noah leaned forward, quill ready.
Bruno strode up and down the aisle, his voice rising and falling like a showman’s. "When you cast a spell, you are not just shaping mana into runes. You are making a bargain with your body, your control, and your reserves."
"Think about it. What are the things you need to cast a spell? Mana, Runes, and Intent." He grinned widely. "Your intent comes from your brain. Your knowledge. Your imagination. That’s a product of your body."
"Mana needs two things to function well. Your mana reserves and your magic control. One is useless without the other."
"And all this together means that the runes you form, which is the spell formation, can be stretched. You can shove more mana through them, force them to do... more. To go farther. To burn hotter. To strike harder."
He whirled, chalk in hand, and carved a formation into the air itself, glowing white lines taking shape. It was a simple fireball, the formation neat and tight.
He flicked a finger. The formation fired off a small, marble sized flame that fizzled harmlessly into a spark.
"Now," Bruno said, drawing the same formation again.This time, his fingers pumped more mana into it, and the runes glowed a hot red.
When he fired it, the sphere was the size of a man’s head, blasting against the warded wall with a thunderclap.
The students flinched, some covering their ears. Bruno only laughed.
"That, my bright eyed students, is pushing a spell to its threshold. The trick is knowing how far you can push it before the formation collapses. Too much pressure, and..."
He snapped his fingers. The third formation appeared, distorted and warped, then exploded in sparks, the backlash forcing him a step back.
"Boom," he finished cheerfully, as if the sparks hadn’t singed the sleeve of his robe. "Mana feedback. Broken channels. In extreme cases, a nasty soul burn. You won’t forget that lesson if it happens to you."
Noah’s shadows whispered around him, intrigued at what they were seeing. He ignored them, scribbling notes.
Bruno pointed to the students. "Every affinity has different thresholds. Fire can usually be stretched further, after all, it’s volatile and hungry."
"Darkness?" His eyes swept the room until they landed, unnervingly, on Noah. "Darkness is tricky. Too much force, and the formation doesn’t just collapse. It implodes, dragging the caster’s mana with it. Dangerous stuff, but powerful if you learn the edge."
Noah met his gaze evenly, expression unreadable. Had that been meant for him or was it a coincidence?
"Now, for my favorite part of every class, exercises!" Bruno clapped again. "Each of you, form your simplest spell."
"All I need you to do is push it, just a little, then a little more. I want you to feel the strain in the lines. Stop before it snaps. Know your threshold."
"Don’t worry." He grinned. "Don’t be afraid to push the spell formation. I’m here in case you mess it up. Nothing will happen to you."
Some students looked unconvinced, but the room buzzed as they raised their hands, glowing spell formations sparking to life above their palms.
Sparks of lightning, wisps of flame, bubbles of water, and even coils of shadow.
Noah traced his Fireball spell formation, letting the mana flow steadily. The orb wooshed to life above his palm. It flickered, before stabilizing.
He fed more mana into it, and the sphere swelled, the runes humming louder.
His hand tingled, but he didn’t stop until the lines wavered. Just before collapse, he pulled back, releasing it. The fireball burst against the warded wall with a thud.
Bruno’s eyes gleamed. "Excellent! That is the feeling. Do it again. Do it a hundred times. A mage who knows their threshold is a mage who can survive a battlefield."
He prowled among them, correcting those who failed, and encouraging them with a big smile on his face.
Noah looked up a few minutes in as a loud woosh filled the air.
A student had overcharged his spell with too much mana, and it had overloaded, but Bruno had simply waved his hand, and the spell had been swallowed by nothingness before it could cause any damage.
Seeing that his words were in fact true, the students felt more confident, pushing their formations more.
Noah wasn’t sure if the man had eyes at the back of his head, but anytime someone overloaded their formation, it was simply swallowed by nothingness, even when he wasn’t looking.
When he reached Noah, he paused.
"Good control," Bruno murmured, almost too softly for the others to hear. "But I can tell you’ve been... tempered by something harsher than class drills."
Noah met his gaze coolly. Bruno grinned, slapped his shoulder, and moved on without saying more.
By the end of class, the room reeked faintly of ozone and burned mana. Several students rubbed their wrists, exhausted, but Bruno only seemed more energized. He dismissed them with a booming laugh.
"Remember, thresholds are not walls! They are doors. And if you are brave enough, clever enough, and desperate enough, you can smash through them. But only if you’re ready to pay the price. Class dismissed!"
As the students filed out, Noah hesitated for a moment, staring at the faint scorch marks left on the walls.
His shadows whispered into his ears, the universal truth they’d learned the hard way.
"Thresholds break. And when they do, something new is born."
He smiled faintly. He already knew that truth better than anyone.