Miscellaneous: Drusella Sathir and NOS drop rate

[Bagavan]

Perhaps this is just terribly bad RNG but I don't remember the Necklace of Superiority being this rare on blue. I'm starting to wonder if this is bugged so I'm bringing some attention to this to take a look at the drop rate.

I have killed Drusella Sathir every spawn dating back to January 4th and she has yet to drop the Necklace of Superiority. That is 20 consecutive spawns without a drop. Happy to provide logs if needed.