Faith + Vamp Gaze + Shaftstop on Act 1 merc (so she can have some life leech and survivability - she is there just for the aura) and Delirium + BOTD on player character. This works surprisingly well on bowazon, because damage is not that much lower than with Faith and amazon has Dodge, Avoid, Evade and stays back which makes enemies very rarely hit her, so chance to proc Delirium is reaaly low.
She is just spamming confusion like crazy and triggers Poison Nova pretty much constantly. You don't even need knockback, because monsters are busy with themselves. So many things come together in synergy and it just works. I really think this deserves to be a standalone bowazon build.
Technically it should be enough to use Beast instead of Faith on Act 5 merc (with Beast you need 105 IAS for max breakpoint and with Faith you need 92 IAS), again with BOTD and Nosferatu's Coil I have 110 IAS no problem (you don't need knockback that much because monsters fight with themselves).
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