I've camped Kyv Bowhound for the past 3 days and out of 17 spawns he has dropped 2 spire control shards and 15 glowing stones of expulsion.
Has this item been removed from his loot tables? According to this site the stone should be his rare and the knuckleblade common.
Edit: 5 more spawns with glowing stones of expulsion and on the 6th he finally dropped the knuckeblade. So it DOES still drop, I'm either extremely unlucky or it is rare and the stone is common.
Edited, Nov 30th 2017 9:14pm by AhrminHammer