I'm starting now on Teon, and I still don't know what I want to be, so I have a few questions.
If you don't know what you want to be....you can be sure that you do NOT want to be an Overlord. And every OL out there will tell you the same thing. (The few left that haven't rerolled or subclassed something more 'useful' anyway.)
I wouldn't bother wasting SP on that skill. And Confusion is not just a BD skill, all of the DE Fighters have Confusion, Drain Health, Sting, Hex and Power Break.
I'm starting now on Teon, and I still don't know what I want to be, so I have a few questions.
Is Confusion (BD skill) working on PvP?
Is Seal of Mirage, Curse Fear, Curse Discord working on PvP?
Nope, nope, nope (or nope until Interlude update, not sure), and nope.
I'm not sure of how the skills affect servitors (summoned creatures), there are some close-to-exanimate disputes on that, nobody cares. The skills are definitely not worthy to be used in pvp. Nuke-nuke-nuke, carefully knock an arrow, carefully knock an arrow, and/or gulp-gulp-gulp - eat 15 pots per second. PvP in a nutshell.
How much MP that MP Scrolls restore?
Test it, if you mean elixirs. They differ from grade to grade. Or wait for someone else to answer, i've never used them.