Here’s a quick build for Chaos Damage support. The support offered is healing/regen/damage mitigation.
4 active heals (Apothecary’s Touch, Menhir’s Bastion, Blood of Dreeg, Word of Renewal), and the Augur proc set Empyrion’s Touch.
The build has strong phys resist and damage absorption (Possession, Menhir’s Bastion, Inquisitor Seal), and reduces enemy damage by 20% while shooting at 'em. The combination of these will make the build very tanky.
The damage looks mediocre - not bad for single targets, but poor AOE damage. The build shoots a little slowly for my liking, but for a support build it looks kinda fun to be honest.