For those who play on private servers,I didn't try on official,might work actually, but 100% works on L2j servers.
So:
1. You need a Grand Khavatari and Hierophant and a Blade Dancer + your character 30+ LvL wich you are going to power-level.
2. Now Everybody knows that if the difference in LvL is greater than 30 (I might be wrong) the power-leveled character doesn't get XP.
But there is a way...: You need 2 or 3 characters 30+ LvL and the Power-Leveling characters.
3.The bug is that the Party Leader must be one of the 30+ LvL character.
4.If you tried 3 30+ LvL characters in the party and they don't get XP that means you got to make 2 30+ LvL characters in the party. It works either the number of party members is pair or impair)
5. I usually buff PP and BD, no vampiric, use Nightmarish Light set on the Tirant, uder Bison and keep your HP LvL under 30%, use S Grade fists with Critical Stun. Pagan Temple and Monastry of Silenece are very good for this purpose.
Here are some pictures

![(!empty($user->lang['IMAGE'])) ? $user->lang['IMAGE'] : ucwords(strtolower(str_replace('_', ' ', 'IMAGE')))](http://www.freeimagehosting.net/uploads/th.c7c2310a63.jpg)
![(!empty($user->lang['IMAGE'])) ? $user->lang['IMAGE'] : ucwords(strtolower(str_replace('_', ' ', 'IMAGE')))](http://www.freeimagehosting.net/uploads/th.b5279eb09e.jpg)
I do play on a Russian private server x10 with GM shop , L2j , Interlude and I use this tactics to make more and more bots
