Larian Studios Forums Divinity: Original Sin 2 Divinity - Original Sin 2 - General questions about a few builds

Hello, Im making some builds more to enjoy and know every school of the game than to absolute-optimize the game (that will come later). Anyway I dont want to make something stupidly useless, so, this are my questions:

1 A pyro-aero-hydro mage is viable? I dont know why I find geo spells BORING (not just in this game in fact).

2 Should I put intelligence in my death knight? I mean, necro skills increase with intelligence. Also he is dealing very little damage, should I switch to two handed? What about dual wielding?

3 My summoning archer is doing A LOT of damage with his bow, I feel kinda useless its sumonning skills, maybe is a bad combination?

4 The polymorph-warrior is also doing lot of damage, but Im thinking on adding him aero to help the enemies get stunned easir with him and my mage (and for the lack of magic damage), any advise against this?

Please, help this newbie!