follow up
I tested against cpu and while not breakable, the grab can be teched.
Anyways, if the grab is not teched and you counterbreak successfully after skewer, the damage is 98%:
backstab (first hit, not breakable), st.fp (second hit, not breakable), grab (techable but not breakable), skewer (breakable, let’s assume we counterbreak succesfully), fp auto, shadow skull splitter, (both inside lockout, so not breakable), shadow conqueror ender:
98% damage in a one chance to break
43% unbreakable in case they don’t take the cb bait
Also, I forgot: shadow conqueror ender only adds 5% of damage over normal conqueror ender, so this combo is actually 93% damage with only one shadow bar.
And 85% damage without shadow bars at all (replace shadow skull splitter with heavy linker skull splitter
In fact, 2 shadow bars only add 13% of damage