Review Detail of Anbu310 in The Sorcery Academy: I am Invincible After Getting Treasure Chests Everyday

It's not good.... The ranking of power levels or cultivation don't really matter for the MC, at the beginning we are told he has the lowest magic power level in the academy but after getting a single spell all of a sudden he insta cast like 9 spells in quick succession. It doesn't make sense, none of it does...