I'm building an assassin for a party of four. The plan, for now, is to go with shifter soul and get Longtooth Regeneration. I want to also get the primal feat that increases the regen by 2 as well as plagued regenreation. At this point I won't be able to get student of the plague. Will this create too many problems with the party having to avoid being adjacent to me? If so it gets worse later on. At 1-10 I'm pulling 5 regen / 5 necrotic damage. Reasonable. By paragon I'm doing 8 regen / 8 necrotic. By epic, however, I will be getting the feat that bumps regeneration and thus eventually doing 20 regen / 20 necrotic. Now, by this level is even doing necrotic damage like that a reliable source of damage?