Mythic Archimonde, in which you rapidly discover that the tendency for everybody’s trinkets to behave or misbehave has a dramatic effect on early progression. Numerous strategy changes and most likely the largest number of pulls put into a boss for the first kill, Mythic Archimonde was definitely a huge test for the end of the tier. Everything culminated in what was nearly a flawless kill, short of flying bear and last-second conduit fireworks for style points. Ultimately proving that, once again, this guild is resilient as hell and not even a partial restructuring early in the expansion could stop us from completing all available content.
Onwards to Legion! Well, that and mount farming.