I've been tinkering with the new Bodyswap of Sacrifice. Still need upgrades here and there but the mapping is very smooth. Single target speed depends if you can proc Hinekora explosion.

Increased Area of Effect

Chieftain Armour Stacker League Startable? Armour Stacker Build Guide - Path of Exile

Vaal Smite

RF Chieftain-Explody+Gigatanky

Righteous Fire

RF Explodi Chieftain SSF MF/MA showcase on 86% reduced regen map (DoD+Aegis)

Fire Trap

AFK Simulacrum Chieftain

Firestorm

Corpse Explosion Autobomber - Ignite Proliferation Chieftain forum build guide

[Path of Exile 3.22 Ancestor League] Ghosting and Magic Finding Explained - Chieftain Autobomber

Corpse Explosion Autobomber - Ignite Proliferation Chieftain - T16 80% delirious showcase

Am I qualified to make a build guide now? Chieftain Incinerate/Flamewood Ignite Feared

Incinerate

Wormblaster Re-filled! (read comment for details)

Herald of Ash