Anyway, there is currently some debate going on elsewhere over the viability of the Soul Eater's level-draining mechanic. Does every attack with your natural weapons drain? Can you make multiple drains per turn (say, as part of a flurry)? Or are you limited to only a single standard-action drain per turn?
Hnm the Souleater was marked at -1? Well here is my take on it, I may be wrong but this has been my impression of the class:
The requirements are rather easy to met, without resorting to templates or other tricks there is simply Elans or Elf (with otherworldly), Changelings (with that racial feat) and for classes there are Monks, Psi-warriros, Swordsages, Druids and their shapechaing ilk.
For the rather easy requirements the class itself grant Full BAB, all three saves as good saves, d8 in HD which is decent and 4 skill points which is better then the generic 2 that most classes get stuck with.
Soul Strength, Enhancement, Endurance, Agility, and Power all grant the user +4 to Str Con Agi, +2 to Save, abilities DCs, and abilities used for 24 hours. This happened whenever a soul eater attacks a
living oppoent, you don't even need to finish off the opponent, just one attack. These buffs augments it's melee role fairly well, because thats where a it should be.
The cap stone ability Soul Slave, grants you a wight army. Which is what you use in case you run into anything immune to you energy drain. Your army.
Lastly at 6th level you get Soul Radiance - which is the
as the Shapechange spell, five to three levels earlier then wizards. Only the kicker is this version has no HD limit and no CL limit- well ok it's limited to anything you "Kill" which is a rather laxed limit in my opinion.
I apologize. A little ranty, but in my opinion they are a solid tier +1 and I haven't even mentioned they actaully drain levels yet.