Fun with Monsters and Shifting

[Krystoff]

Hello all,

I was thinking about it and one of the requirements of the Shifter PrC is that you need to be able to Wildshape/Polymorph Self/ or the ability to Alter self. So that means that Monster Races such as Pixies and Dopplegangers can meet the Pre-Reqs for Shifters.

So my question is, what races would be elligible to become a Shifter and what are their ECL's?

Thanks