I discovered after many hours of playing, and try other builds, that a Priest build I like very much & one time I played an almost pure Priest ... but in some way not what I find the most funny way to go to the end of FoV.
After that I tried a Ranger Priest & a Mage Priest. On this moment I'm playing a Warrior Priest ! (just reached level 11 this morning

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I thought this will be a real challenge, but in turns to be not bad, not bad at all !! And I play on nightmare .
The combination of warrior with priest skills plays fantastic smooth and is o so big fun !!! ...
Smooth, but so far never one moment boring !
For example : Rush Attack an enemy I choose carefully and immediately Charm it or Blind it ! So fun to look at the effects

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Also know that it's still a dangerous situation IF I do NOT plan a good strategy each time again AND when the fight begin I never forget to accomplish my plan(s), be open minded to change the plan if it turns out to be "a not so good plan" and always be careful & patient . Better save (read as: better jump out of the fight and run, with or without using Hide in Shadows) than sorry (die & reload)

Sometimes even a healing potion is to late, so better evade the battlefield and prepare myself for a next move

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I start to believe this Warrior Priest (Wirlpriesly, female hero) is my Ultimate Build,
but who knows what will be the next that comes of it ?