[1.2.326] (4) Really last chance!

Does anyone know how dark knight's sacrifice work after KMS 1.2.102?
The skill description said it ignore W.DEF, so it still suffer from PDrate damage reduction?
And how does the "% damage taken from HP" work?
At level 20, its 11% damage taken from HP, it means if Drks hit a boss with 200k damage, he will take 22k damage himself??
If it works like this, then is this skill still viable for bossing?

I assume it ignores both PDrate and PDDamage, but we'll need to test that. Sacrifice takes 11% of YOUR max HP now. If you have 20k HP, you'll do 2.2k damage to yourself with Sacrifice. I'd say it's an expensive skill to train with, but definitely viable for bossing.