On Mythic, I like to run with Spectral Deflection, Anti Magic Barrier, Rune Tap, Blood Mirror and Tombstone if needed
CDs are rotated like this
1st - Spec Deflect (Passive), Rune Tap, Blood Mirror
2nd - Spec Deflect (Passive),Rune Tap, AMS (Max hp) - if using tombstone, use here
Vamp Blood for either
Not counting armor or externals, these are the dmg reductions to save you the time
1st - 16% BS - 16% spec deflect, 25% rune tap, 20% blood mirror =
3.2M dmg, 58% reduction (excluding armor)
2nd - 16% BS, 16% spec deflect, 25% rune tap =
4M dmg, 47% reduction, + 25% max hp (Best use for IBF) - with IBF = 2.8M dmg, 63% reduction
Remember, if you run Tombstone, make sure you have 10, and extra runes, so you can use it for the shield, then immedately reapply a few bone shield charges.
With these numbers + armor dmg reduc, youll have no problem surviving
Ik there was a bug on that log, but these are just some tips
GL
Edited for some more useful numbers - correct me if my math sucks