I highly recommend to not interact with this individual. He went to saying 9% nerf will do nothing and that people are bad (like full on toxic mentality) then turns around and says meters, addons are toxic.
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Agreed - the issue I felt with Sire was the the skill ceiling required to kill heroic was a bit too high compared to the rest of the raid and the first few mythic bosses. At the moment, they may have overnerfed it - it was quite easy last night. Took 4 attempts - few wipes due to early push, people dying in p1-2 who never done it but overall was a lot easier (also, we transitioned with 3 adds dead - one add on 30% so that 9% nerf REALLY matters)