Glad you make it
I love to read all the different skill - builds and how every gamer use their own strategy plan
In the very beginning playing Divinity 2 I didn't make any attention to the Priest skills ! But after a while playing I first go for Summon Ghost and that is because of my love for all kind of Ghosts in this game ! They're funny, groovy, wise and cool speaking and nice designed/created ! (the Ghost of Arben was the first Ghost who impressed me, after him the Larian, the 'Librarian' !)
Then I start to search for a strategy to kill Amdusias and I discovered Hide in Shadows sweets me best to surprize him & kill him in melee (Hide in Shadows, run to Amdusias and use Rush Attack ! Together with my summoned Ghost and Creature Amdusias wasn't happy breathing that long

...
Master Herbalist was the next skill I try and after that Fear and Charm (great) and also use now Blind ! Love them all, so my next New Game will be a Priest build ! I wish to try first a pure Priest on nightmare. Just very curious if that's surviveble ! If not, I sure take Stun Arrows and use a Bow or a 2-handed sword.
Sorry I go off-topic ... but I'm so ... can't find the words ... I think you can "imagine" it yourself, isn't it ?