Going over some logs of other guilds that killed him on heroic and I see they manage to mark players (with a skull) that are being targetted by the Bramble Swarm.
The Bramble Swarm was actually a huge issue for us to deal with since nobody knew when it was targetting them since there is no debuff, aura or w/e to tell you if you are being fixated. This was mostly an issue when we had to stack (to cleanse or for ancient) and nobody knew who the brambles was fixating.
Does anyone know which addon or weakaura is providing this marking?
It is not BigWigs and I doubt it is DBM but having this marking is gamebreaking on this encounter tbh so I would really like to acquire it for my guild.