You didn't come into contact with a shard of an utterly alien entity, gain magic powers, unlock spiritual potential, merge with extraterrestrial DNA, become a supergenius, or gain a mysterious artifact through this, no, you're most assuredly still human. Instead, you simply gain impossible, magical skill in a form of your choice - swordsmanship literally warping space and time to keep up with your skills, for example. More than that, you can train your other skills in a similar manner. With the right skill at your peak, you could kill an Entity, but that would almost certainly erase you as well as all record of you from existence so thoroughly that the only thing left of you would be other people's memories.