What Klea just witnessed was a glimpse of a Domain, a manifestation of power that stemmed from a high comprehension of the Law of Sovereign. Such a manifestation could normally be seen from individuals at the grand magus level or above.
For Julian, however, his Law of Sovereign came from a unique source.
"It comes from the power of faith. The more people worship me, the more power I will be able to manifest. It will be more powerful and I will be able to use it for longer."
This talent was precisely the reason the Nephilims were fond of him, even to the point that during his time at the faction, they lent him a small planet for him to test his talent. There, he became the god of their kingdom for a few months.
Hence, the reason he became so much more powerful when he returned to the academy.
After explaining his power, Julian quickly added his goal to Klea.
