Problems:
Traits don't give you more ranks in skills, and feats and prestige classes require a certain number of ranks as prereqs. Not the total bonus or something.
Can't find it right now, but the developers are on the record somewhere as saying aligned class only works with base classes, not prestige classes.
But worst of all a bunch of lower level class abilities doesn't add up to much. A 10th level psychic with a +15 BAB and a random bunch of class abilities is not going to pull their own weight at level 20.
That still doesn't help. Class skills get a +3 class bonus but not extra ranks.
Edit: also, the character's still embarrassingly weak as written. And it's not obviously themed in a way that might excuse that.
I am also wondering what you are missing by referencing a "Forest Warden" prestige class, which actually does not exist under that name. My guess is that you got it from d20pfsrd.com and therefore are missing its real name and prerequisites. With the full information from the original sources or the Archives of Nethys, this combination might not make sense even if you could somehow make it work. The biggest issue with your build is that you should not be able to take your 1st level in any prestige class before 6th level -- if you are thinking you can do it, you have either misread the prestige class prerequisites or missed an official clarification somewhere.
Avr -- I would love to see at least one reference from somebody at Paizo to prestige classes not being valid as aligned classes. It would be convenient to have something to cite on that point.
I am also wondering what you are missing by referencing a "Forest Warden" prestige class, which actually does not exist under that name. My guess is that you got it from d20pfsrd.com and therefore are missing its real name and prerequisites. With the full information from the original sources or the Archives of Nethys, this combination might not make sense even if you could somehow make it work. The biggest issue with your build is that you should not be able to take your 1st level in any prestige class before 6th level -- if you are thinking you can do it, you have either misread the prestige class prerequisites or missed an official clarification somewhere.Avr -- I would love to see at least one reference from somebody at Paizo to prestige classes not being valid as aligned classes. It would be convenient to have something to cite on that point.
You can enter Arcane Trickster at level 5, but that's the only one I'm aware of.
As for this build, it's certainly not legal in its current form.
The primary error seems to be based on a misunderstanding of what Ranks in a skill are. There is no possible way to have more Ranks in a skill than your character level.
Therefore, you must be level 3 to take Deific Obedience, Level 6 to enter the Evangelist or Chernasardo Warden prestige classes, and level 7 to become a Mortal Usher.
That said, the build is possible if adjusted to fix those errors, and could be entertaining if not powerful or effective...
Forest Warden is the non-OGL version of Chernasardo Warden.
I toyed around with stacking Aligned Classes (and similar) abilities, though I used Esoteric Knight, Mortal Usher and Evangelist to do so. Base class was Kineticist. It was fairly good.