Scion Spell Totem Build

Hello All

I finally created a Scion Spell Totem Build and I thought going Hierophant and Chieftan made the most sense even though it seems like most people dont do that for Scion Totem Builds. Anyways here is my pastebin: https://pastebin.com/mMJN2DuA

Im using purifying flame with Soul mantle as my main ability. Obviously im using 2 Kikazaru and took sanctum of thought so that curses have 0% effect.

Im using Devouring Diadem for my auras and feast of flesh is a solid help with overall sustain plus its super cool and ive been wanting to use it for a while. Eldritch battery is also great since im taking MoM and Hiero Scion node has 8% damage taken from mana for a total of 38% of damage taken from mana.

My main form of sustain is from the chieftain scion node that allows my totems to leech life for me. To help sustain my energy shield from damage and using abilities, i took zealot's oath. all this plus Feast of flesh from Devouring diadem should be enough to sustain me pretty well.

Im level 77 with this build right now. Ive already done eternal lab and have all the gear showed in my pastebin and so far so good.

Let me know what you think and if there is anything you would change about my build.

Thanks!