Amazing work team with the kill of this boss. It took ~2 hours and 45 minutes to kill this boss from the first time we saw her. We went in today with a new strategy for the Tethers and ended up 3-shotting her. I think this is better than any of us expected, and once again, I am very proud of everyone! This fight is arguably massively easier than T10, with a stricter DPS check depending on your composition of classes.
Kill video, courtesy of Rinchan: (It should be noted I sucked very hard sub 55%, and Rinchan said he messed CD's up near the end, so DPS check isn't too too bad if everyone plays optimally)