Same as above for DC's.
Sindragosa, as soon as P2 starts and she is grounded (we call it P3) I DC the first time she blocks someone, come back in and from then on every time she blocks someone DC.
LK, P2 as soon as the Valk's spawn and its announced I DC.
Basically any time an "event" happens on a boss I DC.
Any issues with Shadowed Unit Frames? For some reason I think there might be.