Best mod for a melee build

I am looking for the best mod for this Assassin build. I am not asking you to use my build, I am just asking for help. I focus more on melee. Again, this is simply asking for help.

Best mod to use is a legendary ninja com.

It is highly recommended you get b0re.

Backstab is one of his best skills and should be taken no matter what in melee. Grim is unplayable with many must fall so remove grim.

As scclarke said, L. Ninja. Also, the points in Iron Hand would be better spent in Backstab. Iron Hand is one of Zero’s weaker skills- the health boost and melee damage are both additive instead of multiplicative IIRC, making Backstab the better choice…