The reworked Thundering affix is now testable on the Dragonflight Beta. 4 players are affected each wave and if you don’t clear your debuff, the consequences are stunning — an 8 second stun that will likely kill you!
New Thundering Affix in Dragonflight Season 1
Here is the new tooltip of the Thundering affix.
Thundering – While in combat, player are periodically overcharged with primal power from Raszageth’s unending storm.