Sorry .. haven't had the time to look on the DE files as yet .. have been working on the Daemonic one and the Vampire one
But some hits ... look at my new daemonic files ... under furies you should find a way to do the "dont counts toward core"
And in the Vampire you'll find more ... When in doubt just ask youself ... are there an army that already have this rule? if yes .. then you proberly find the code for the rule in their *.dat file ... that's how I learned