byout of time and energy to try it, but I took at swing at the new exotic mission on legendary at -16 (and then -20 near the end when I remembered what contest mode actually is set at), and I got to the last boss and through 2/3 of it a few times. devourlock the whole way, volatile commem is a beaut. Got some confidence I can hang with this on Friday. That last phase feels.... real rough on warlock.
I'm sure there are ways to do it but like I said, out of time and energy. Feel more confident and that'll have to do.
I think my favorite death during the run was a wyvern launching me out of the arena in boss 1 while I was trying to dunk.