I started working on the Zern but I am kinda drained from work, I have all the abilities, and benefits of the class I just need to order them up into 6 levels.

Zern
HD: Tough to call what it is comparable too, may go with D8 because the shapeshifting is similar to druid but...
Skills: Again, tough to say what class it is most like, plus I will probably remove racial class skills.

STR +6, Dex +6, Con +4, Int +4, Wis +2
Darkvision 60ft
6 Natural AC
Fast healing 5
Spell Resistance 18
Warping Energy, 1d6 per 2 HD + Int modifier (This is an amazing ability, holy crap)
Shifting Guise
Transmutation affinity
Craft (Flesh Sculpting)
Adaptive Defenses
Malleable form (Again really good, this will come in at like level 6)