Updated to try and add in some more Crits and survivability. Still has high damage and higher than previous once the combo multiplier gets higher. Primed mods can easily be swapped out for regular ones if you don't have them (Just means your attack speed is ~1.2)

29/10: Swapped out [Primed Fury] with Berserker. With this build you are building crit chance up with [Blood Rush] regardless, so berserker just leads to more Attack Speed as long as you can keep that combo up. I use Naramon, or you can just keep wailing away at people. Build now only really needs 2 forma. Could swap [Blood Rush] for [Weeping Wounds] and put a 90% Elemental mod, but this is just my preference (Becomes 3 forma (2 Madurai, 1 Vazarin) if you want [Primed Fever Strike] in there)