What are the planer based spell casting classes?

[akma]

I`m thinking of building sort of a planer wizard base class, and I wondered if there is already such a thing, and what are the existing planer energy based spellcasters (I`m sure there are some) which I could take inspiration from.

P.S. Also, does it sound like it should be a divine caster? I`m going to do versions of both anyways.

[Greenish]

Faiths of Eberron has the infamous Planar Shepherd PrC.

Manual of the Planes (3.0) and Planar Handbook have PrCs too, but I don't think either has base classes for it.

[Claudius Maximus]

Clerics can take planar domains, which count as two domains at once. Some might say this implies the plane is their power source.

[Arcane_Secrets]

Faiths of Eberron has the infamous Planar Shepherd PrC.

Manual of the Planes (3.0) and Planar Handbook have PrCs too, but I don't think either has base classes for it.

Manual of the Planes has the Planeshifter in it, which might be useful. I'll look in Planar Handbook later.

[Psyren]

Psionics has the Planar Vanguard (http://www.wizards.com/default.asp?x=dnd/psm/20031219a) - 3.0 but easily converted, since the prereqs were converted as well. (9/10 manifesting)

For the other classes, Planar Handbook has Planar Sub levels for most of them with neat benefits. Planar Sorcerer is one of my favorites, for the early access to Fiendblooded.