Not op as the meta melees, but i tried my best to make it kill most enemies

Viral heat or corrosive heat, both work horrifyingly well if you have enough combo meter... But due to the lack of slash, it is harder to make the most out of this melee... So i'm going with a luck dependant build with heat

You can swap [Berserker Fury] with [Volcanic Edge], the stance is okay even without much attack speed
[Grim Fury] seems kinda bad but idk

You dont need the crit multiplier here, orange crits do a decent job