Well, a base shifter would be something like 6 druid/16 shifter, and you take more druid levels until you get the spells and such that you want.
If you use the armed shifts, such as risen lord, then take levels in fighter. If you use the unarmed shifts, use levels in monk.
You want as little druid as possible, as spells don't work as shifted, 16 shifter, and the rest monk/fighter.
~Celestial