So, after testing out Grasp of the starved I don't think there is anything damagewise which can beat it and since damage and defense are not directly linked in this game having highest damage just means the better build.
For solo this is especially true, if you can oneshot enemies, you trivialize the game, since less enemies attack you and with Grasp you can one shot a lot of them if they are in one place. I've heard Warfare also scales better than other skills and necro happens to benefit from it.
With level 13 I've had 1,7k on Grasp:
With Level 14 it was already 2k. The other necro skills are not that bad either, especially combined with Skin Graft.
