Expensive

Vale's eyes widened as soon as he realized what had just happened.

'That was dangerous! That could've killed me!' Vale started cursing in his mind as he saw how the floor was destroyed… The lightning strike left some molten stones about 2 meters in diameter as the temperature in the room started increasing.

Then, he looked at the Dark Spellcaster who just attacked him.

"Sir Isaac?" Vale was confused they were just talking with no issues or disagreements whatsoever and he was attacked out of nowhere!

Vale might understand if he offended the man but he was sure that the didn't do anything that deserves to be struck by lightning.

Well, he called Isaac lonely in his mind but there was no way he can read his thoughts.

"Good reflexes… Do you know what the Headmaster said in exchange for allowing you to inspect my corpses?" Isaac answered with a chuckle…