https://wccftech.com/battle-for-azeroth-patch-april23/

Blizzard is rolling out a new World of Warcraft: Battle for Azeroth Patch that nerfs the damage output of Shadow Priests.

The new hotfix is going live this week and will reduce the damage of Auspicious Spirits from 100% to 70%. According to Blizzard, for Shadow Priests, multi-target performance was beyond the team’s tuning targets and they want to bring it back into range. On the official World of Warcraft forums, various players are complaining about as the nerf also has quite the impact to single target damage.