WoD rares? Or all rares? There's a WoD rare profile that runs in questbot if that's what you are looking for.
Rarekiller is not really needed. You can make a quest profile with hotspots that cover the area that the rare is at, then have the mob id tagged as what you are killing.
look for Poseidus in buddy store. last i Saw there was a working version for free. https://store.buddyauth.com/Product?productId=5871