How to Stack Subclasses on L2 I n C
This is what you have to do:
1. Must have at least lvl 76 on both Main class and Subclass.
2. Do NOT change 3rd class on any of them.
3. Go to an cat in any town.
4. Must be on your Subclass
5. Open Magic Gem -> Subclass -> Change Subclass
6. While making Subclass change Magic, double click on cat.
7. When your sub is changed, press Advance to... .
8. Have Fun!
You're Done, Overpowered and Ready to KILL!
Screenshot with stats example:
http://i44.tinypic.com/23j1pmq.jpg
Video (sorry for LQ):