PoE Impending Doom, Scion builds

Hi, im trying to craft a build using the Tainted Pact Colar Amulet ("Chaos damage over time taken heals you instead while leeching life") and self poisons via The Golden Rule unique jewel ("poisons you inflict are reflected back to you if you have fewer than 100 poisons"), i have already managed to make a build that is able to tank most bosses without taking damage, the problem was that as soon we werent leeching or getting poisons, we would die very easily. So now im trying to think of ways to always have Tainted Pact active, regardless of monsters being hit or not. I've come up with a few id

Ive seen lots of builds talking about how the new Tainted Pact amulet, which gives "chaos dot heals you while leeching life" is not working properly, or how its inconsistent and people keep dying when their leech ends. Im currently playing a Impending Doom Scion, which seems to be working decently with it; it doesnt die to lack of leech and has decently sized poisons, its nothing fancy or expensive but it feels very resilient while taking damage from packs of mobs, or tanking boss mechanics while attacking, and i havent even invested much in defenses. This build does T16 rare maps with ease a

I have this idea of using empire grasps and cyclone , sucking enemies in and permastunning them while casting purifying flame. While i did make a pob for this, it lacks damage and i am still clueless on how stun works. any ideas on how to improve this?