"Rouse the power of Aqshy from the ground and burn all to cinders!" - DLC Item description.
Left-click/Light attacks will spray a volley of cinders from your staff, like shotgun pellets, at your target.
Right-click/charged attack, will conjure a vortex of fire at a targeted location for some time, damaging enemies who venture too close to the dancing flames.
Damage over Time, Crowd control, Charged attack.
This is a DLC weapon!
You unlock it by purchasing the "Forgotten Relics"-DLC. After purchase, it will become available to craft in the crafting menu.