Nemesis

Although Rangda's Mask is helpful for the pen once evolved, assume this is for non-Conquest modes (since there's no sign of Bumba's Mask or other standard starters.

Hastened Katana is a luxury item that may not be needed for a god like Nem, since she has her double-dash + a slow that should help keep enemies close.

Deathbringer as a standalone damage item isn't really optimal. You usually need 2 crit items (or at least 1 if playing a god with crit in their kit) to have effective use of crits, and DB should be the 2nd item, not the first. I understand you said that the last item can be "absolutely any item" (which is crazy open-ended), but a simple build like this should really have better direction, or at least a list of items that would suit as a 6th item to replace Rangda's.

Finally...you don't have any real protection reduction or pen (outside the small amount from Rangda's before it's replaced). That's a pretty big oversight on a god looking to deal a lot of damage.