What is the earliest CoC can come online, which Ascendancy, weapon and trigger skill?

Cyclone

Discharge Assassin Build Concept | Path of Exile

Inquisitor CoC Feared all at once

CwC VD Inquisitor - The Feared showcase

Mjolner Discharge is back!

3.17 Storm Call Inquisitor - Uber Elder

[3.16]Rain of stars ! Occultist Cyclone COC Firestorm 210%AOE + Herald of Ash

Eye of Winter Starter Build

LL Fire BB Inquisitor: 100% Delirious T15 Canyon

Unboxing Try it out! ARC COC Occultist The Eternity Shroud