I’ve tried multiple setups and this is the one I like the most:
CoA with Protector Stone + a -15% req / +40% ED jewel
Insight Great Poleaxe (Archon Staff would be BiS since higher min damage = better consistency)
BK + SoJ
Arach
Spirit (35 FCR)
Amulet: +1 Warlock / 15 FCR / 11 all res
This setup hits 125 FCR with max res.
Shako would give roughly the same damage as CoA when you factor in the extra 40% ED jewel CoA Has. CoA also looks nicer and makes it easier to cap resistances, while Shako gives you more life and mana and mf
Performance-wise it absolutely melts everything — mostly 1–2 shots in p8 TZ 96.
Can handle Ubers (both Ancient and normal) very easily.
Damage feels very similar to an Obsession setup, but Insight means zero mana issues (no pots needed), and it’s way more budget-friendly.
Highest damage would perhaps be with Phoenix and a 2/20 circ + an fcr ring but it's way overkill and you'll lack with res most likely
I am using an eth shilleagh insight or whatever that staff is called
but I do have a CV and a GPA
I guess 50% undead damage too with the staff and better damage range