To take a page from johnjo's Ork book,
What's so bad about using Oversoul which then can open up Instant Revial and on top of that pack a Charity for the Assassain files? I think it's legit, but it does detract space from other things and may not be useful all the time. There are a lot of decent low level Refess grims that you could splash, right?
Abuser Punisher / Callonia