Blizzard announced nerfs for Mythic keystones level 20 and above for the rest of Season 2.
The latest round of class tuning brings nerfs to classes that were too powerful in Mythic+, which may result in more difficult higher keystone dungeons. As a result, the scaling of key levels above 20 is being nerfed until Dragonflight Season 3 starts, which should be some time after BlizzCon.
(Source)
We plan to implement the following adjustment to Mythic+ dungeons with scheduled weekly maintenance on Tuesday, August 22.
M+ Dungeons
Above keystone level 20, each additional keystone level will now increase enemy health and damage by 8% (was 10%).
We’ve recently made and are currently making a number of adjustments to specs that were particularly powerful in Mythic+, and while we feel these changes will have the desired effect, we’ve also heard concerns that it may now be much more difficult to complete very high keys and achieve ratings that were previously within reach. We think this is a fair concern, so we’re making a temporary adjustment to the scaling of key levels above 20 in the hope that it provides players some space to continue competing for Mythic+ rating before the end of Season 2.
This change will remain in effect until Dragonflight Season 3 begins.
