Flamewood Searing bond Chieftain

This was my weekend project as my second character this league, on paper everything looked fine but this support gem is mechanically flawed, I wanted to share my success but I am here sharing my findings and disappointment.

Cleared T16 maps, killed guardians and conquerors but the pinnacle bosses where a different story.

So far I've tried Eater, Sirus, Shaper and Elder, I was already expecting having to strategic place the totems since these bosses are immune to taunt but most of their skills simply do not trigger the support gem effect.

Eater tentacle basic attack straight up didn't trigger, after staying there a few seconds with him attacking the totems I just changed character and properly killed him.

Sirus basic attacks didn't trigger the totems either, the Die beam did I managed to get him to second phase by placing the totems in front of him and dodging the beams last second but it was too much trouble, so I didn't kill him.

Shaper beam didn't trigger as I was already expecing, but i could kill him when he attacked the totems with his frostbolts and slam.

Elder was the easiest one because he loved the totems and would trigger with every attack.

I spent about 7 divs on gear and gems, my goal was to use new stuff and I managed to do it so i'm overall satisfied with it.

Current PoB : https://pobb.in/YhkOwWsWzSVf (Feel free to criticize and ask about my choices or if I am okay, I don't really mind).

Fight with normal elder : https://youtu.be/A7HrwdTAiLU?si=bRaeph7did8flLXO (Still processing at time of the post so quality might still be garbage).