I watched a video on youtube I can't recall the title of the video now it's been a few months. I remember saving it to my watch later list but can't seem to find it. The anime was about a protagonist that had very overpowered magic abilities.
From what I can remember from the clip on youtube the protagonist beat his "teacher" during the entrance exam/screening for the magic academy. I remember in the anime that different bloodlines had different types of magic they practiced.
One aspect of the protagonist was that he knew how to perform some kind of unique magic. I think he revived a person he killed to taunt a opponent since the person he killed was the opponents brother. There was also a point where I think the protagonist snapped his finger and defeated a opponent.