Do people even read these things?
Personality. ONE PARAGRAPH.
Foreshadowing? Knowing the future changes the future. No one can be certain of the future even in visions, know that his 'power,' can only be glorified assumptions.
The jumping from body to body limitation does not make sense ICly. Sure OOC we can say okay characters are off limits only NPCs! But ICly? That'd be metagaming. If he has the power he would be able to do any body.
There is no such thing as true evil. All evil has some good, all good some evil. Personally I'd say evil is just misunderstood. But for the sake of not arguing today, explain what you mean by turn them 'evil,' because the way you're wording it now it just sounds like you bring out their Negi.