[Raven]

Funny i was just looking to get into one this evening too.

I found three that sound kinda cool but i haven't checked them out yet myself.
http://www.thesecretworld.com/ This one sounds mondern
http://tera.enmasse.com/ this one will have a completely new battle system
http://dragona.sc.gameclub.com/info/catcha.asp i'm thinking about this one cause they have shamans for a class xD

But yea those three i found but haven't played yet. Donno if they are completely free or not. Haven't had time to look into it.