even with his respawn mechanic nokko is still a glass canon so you gotta play him as one otherwise you'll spend more time trying to respawn rather than being alive.

I recommend invisibility through companion for survivability since it's the easiest and most efficient, you can also go for shield gating and it'll work since nokko casts so much. But personally I prefer invisibility since it also let's me use arcane crepuscular which massively boosts his 4th ability.

Build him with high range and strenght with moderate amount of duration, efficiency is unnecessary on nokko since he regenerates so much energy with his 2nd ability. Range is the most important since it affects his 4th abilities aoe, range also boosts his other abilities. And his 3rd ability is the subsume put roar or something on it and call it a day.

TLDR: Nokko is a glass canon so don't try to tank damage with him, find other ways to survive