So, Deathpact is a pretty neat spell. When it works. What about an Avatar version that either doubles its effectiveness while doubling the cost? It would certainly get a lot more prime necros to use it.
if not doubling the effectiveness, another route may be to extend the 5 rds of deathwatch to 7 or 8. Certainly worth casting for all of those solo necros who need that extra time for someone to get them a raise! Even at 200 per casting, I know I’d use it.