my bad, I didnt meet any of them in the 0511 and 0512a versions, in like 2-3 playthroughs... and I aways farm drows there.I did meet it in the 513b version, maybe it was a bug after all?
I've seen them for a while, and the changelog says these were added in 5.8. They might have been tweaked more recently or you just had terrible luck.
