Things you want from devotions are:
Resists
HP
Life leech (if you use attacks)
I’d rushed Light of Empyreon (except 2 last points), taking Crane, Ulo, Sailor’s Guide, etc on wake.
Then, sped 2 points into Obelisk of Mehnir for 300 armour, 4 points into Targo the builder for 400 HP, 4 points in Scales of Ulcama for HP and proc, an so on.
As for damage, only Kraken is worthwhile (for 2-handers), most other are kinda junk.
I find the best thing in ult is to focus on defense with devotion , augment , composant so after that you will maybe have lack of damage if you put all your attribute point in physique.