Grief + Beast
or
Grief x2?

Is fanaticism aura worth?

Dual grief pb pretty much always. If u really want fana a faith merc or if you are playing d2r theres a new polearm rw but only give lvl 1 fana and pretty cheap to make. Just check your ias breakpoints in a bp calculator with all your other gear because it might not matter too much.

Check out xuxinus guide for frenzy. It's a ton of fun

2 x Grief PB, also 2 x Death BA works, Stormslash + Stone Crusher is also decent weapon comb before you get any end game runewords to your hand.

I have 2 grief phaseblades, damage feels weak, wanna know how to make it better.

What other gear & current merc setup?