How often is Dark Shock used in 4th job?

Would have helped if NEXON TOLD US.

I didn't know it ever didn't work on attack, otherwise I would have said something myself. =/

Put it this way - it never worked in Aswan. Definitely doesn't work at places you want them to work at. Summon chance per attack is just too imba tbh.

Hadriel

It doesn't work on bosses, no. Tried it on Sakura Daimyo (and Sakura Daimyo Toad).