Deris thought that Rex was just saying whatever came to his mind.
So he went ahead and tried what Rex asked.
He took Rex's textbook which had a pale yellow cover and draw a mana circle using his mana.
A bright yellow circle was formed which seemed rather empty.
Without wasting his time, he started writing the inscriptions one by one. There were 8 inscriptions in total which were taught and of course, he knew only 4 to 5 of them.
For others, he had to take a look at the textbook and then continued.
When all the inscriptions were written, the circle started to shine with bright yellow light.
Everyone except Rex was completely surprised because of the light.
After the light dimmed and ultimately vanished, Deris swallowed a large amount of dry saliva and with little confidence, extended his hand to get the book.