Dude, it's still not worth... We already talked about it in discord. It's a nice tingh to have but not worth the damage that Chernobog will do!
Just run with ele-advantage and Chernobog will do enough damage.
Why do you even need that skill?
Pluto+Jeanne = 2 Damage cut skill and attack down. If you still die, then get more HP.
I am doing it fine without that skill.