First off, I got my pixie when i was 4x farmed it took me 2hrs to get.
I've had it since I tamed it till now (its full ob now +25). I hope this guide will help you and your red pixie. Oh yeah, this is what I prefer on a red pixie, so don't go posting what you think, if you want to go make your own guide and post your opinions there.

Active Skills
Shadow Illusion (1jps)
Ok, this skill is still unimplemented. But It is a must get if your ranged atk . You must get this skill to Lv6 to get fearlv1 then Lv11 to get fearlv10. Besides when the skill gets implemented it will be good for decreasing threat etc.

Fear (2jps)
aka fear. This skill is good for ranged atk. Well I guess its also good for melee to stall time? idk. But its worth the 2jps. Each lv ads 2secs I think. Lv10 has 20secs fear. You decide what lv you want =x.

Magic Amplify (1jps)
This is another good active skill. Its a self buff for your pixie. I forgot how much matk does it add to your pixie each lv but at Lv10(max) adds +220 matk. From my experience it increases dmg +1k.

Twin Sphere (1jps)
Im not sure how many matk it adds each Lv but right now I have mine at lv12, max is 30. This is a must get skill , and you have to get it to at least lv12 to get blazing fire to lv10.

Breath of the Phoenix (2jps)
Must get skill, does alot of dmg and is a dot(dmg over time) atk. Max it asap xD

Fairy Queen's Blessing (1jps)
Must get, party buff skill. Max is lv15 does +200 mp/hp regen to whole pt 3mins(ithink). Lv5 is max for evo2 and that does +100 hp/mp regen to whole party.

Flame of Phoenix (2jps)
Must get skill. Aoe atk does great dmg for an aoe atk at evo3. You get this skill at lv90 or 95. Oh yeah and its a dot.

Acumen (2jps)
This skill is available at evo3. I got it, increases cast spd.

Pixie Fireball (1jps)
Does around the same dmg as Breath of the Phoenix, must get max it asap (lv10).

Mana Drain (1jps)
Crappy skill, absorbs mp from mob but only 100 -.-. Useless imo.

Passive Skills
Wizard Unit (2jps)
Increases matk.

Intellectual Unit (2jps)
Increases 10% intel

Magical Grace (1jps)
Must get adds +5 matk each lv. Max is 20 for evo2 then goes up to 30 at evo3.

Clarity (1jps)
increases mpregen spd.

All the other passives that increases hp/mp
I didn't get them, hpregen is useless to me. And the one that increases mp is useless too since I barley lose any mp. For the hp one I might get after I creature respec. +100 hp each lv I think.

All OB passives
Didnt get them. Useless only adds +10 -_-
that would make +20 matk/300mp or +20pdef/300hp
Not worth the jp get something else xD.

Weapons and Armor

Staff
Staff is the best for matk. If you want to get the most of your matk use a staff.

Mace
Good if you want your rp to do pdmg and mdmg

Warrior Armor
Get warrior armor. Has alot of pdef

With my full ob pixie fully buffed i have 2100+matk
highest dmg I ever got was 25K~. Ill post some screenies next time.