Blizzard have decided to disable the 
Decay Augmentation Witchcraft Power. Players will not be able to purchase or equip it until it’s brought back, which is planned for next week. The power was causing certain classes to very easily clear Pit tier 150 and deal massive amounts of damage. Here’s Rob talking about the issue.
There’s also an update for Necromancers on the 
Ring of Mendeln and for Barbarians on 
Mantle of Mountain’s Fury, as they will be fixed/improved soon.
Hello all –
We have seen the reports related to some very egregious numbers coming from a few builds/classes. The team has some fixes underway, but in the meantime we will be disabling the Decay Augmentation Witchcraft Power in the game as this is tied to some of these issues. This means players will not be able to equip or purchase this power during this time.
We will be working on a fix and bringing this back to players next week. The team will attempt to see if we can do this via a server hotfix, but if we can’t get this in via a hotfix then we will look at doing a quick client patch shortly after 2.1.1 is released.
Additionally, we did want to provide a few other updates on some other class items we have seen bubble up to the top of conversations.
Necromancer: There is currently an issue with the Ring of Mendeln and its interactions with minion builds. We do have a fix for this and it is slated for 2.1.2.
Barbarian: We implemented a fix for the Mantle of Mountain’s Fury back during our first hotfix for 2.1.0. Since then, we have seen some much better results, but we have noticed there was some confusion related to Damage over Time from the quakes and the explosion damage being inconsistent. We do plan on addressing this which will result in some further strength to this build. We do want to note that we will be looking at this build and doing some balance tweaks as we start the next season.
This is just a few items we are looking and there are many more including game loading issues, client stability, and other class related items that go beyond the list mentioned above. We appreciate the feedback and everyone hopping into Season 7 to check out the new Witchcraft powers.
We will provide an update soon regarding the above after the weekend.
