Rogue Eidolon skill - Devoid

[nubheals]

Ok I just want to ask any rogue out there who has tried this skill:
1. Is this skill working on monster?
2. If the answer to (1) is yes, is it working on avernal boss? And will the damage from instant kill be counted?

[C4P0T3]

1. not sure
2. We don't know .

[Infinitehate]

Eidolon have been released today.

[R22069397]

I cant even get plane scion