MODAFODA

Hello everyone, I've been trying to get the hidden appearence for Havoc Demon Hunter for a week. I know that you should get an Item in order to fight Downfall who will drop the appearence. But not only has the item not dropped (Candrael's Charm) from a week of grinding, but if I try to look for Downfall, I can't see him... Is this because Firestorm removed it from the game, and now you can only purchase it from the website? Thanks for your time.