Annihilation energy

"Testing my potential?" 

Hearing this, Alexander couldn't hold back anymore and burst into laughter.

"So, tell me, what do you think of my potential?" Alexander asked, still chuckling.

"Your strength is impressive, but your techniques are crude, and you lack proficiency in magic... If you release me from these chains, I can teach you the highest forms of magic! Combined with your strength, you will be unstoppable! Invincible across the world!" the dark creature declared.

"But if I become invincible, what happens to you? We'd be master and disciple by then, right? We can't have a master and disciple fighting each other, can we?" Alexander raised an eyebrow, his tone playful.

The dark creature fell silent for a moment, clearly struggling to come up with an answer.

Alexander smiled, watching the creature.