Yes This dominator pendant seems to follow Korean MS. From what i heard, Dominator pendant is the best at KMS coz they don't have gollux boss / Gollux Set. You should update it to give absolab shoulder or something like that
This skill deals 100% crit chance and 100% ignore defense. That is the best we can hope for. This skill is very strong. obviously it will have some drawback. If they change it into toggle, Nexon might reduce the effect. I found it a bit of inconvinience at first. Buit after a few changes on the button, i manage to find the best way to utilise it. It is pretty op especially on mobbing. Just need to get used to it. Now DA have 2 mobbing skills, 1 with a huge range and the other with middle range (Demonic Blast)