None of these make much sense.
-Unholy/vampiric: Serves no useful purpose and goes against the spirit of what these effects were designed to do.
-Probably the best thing in this list, but could potentially be overpowered. Having to micro it means it requires some skill to use, and auto casting it would drain their mana too fast.
-Abominations simply don’t need a buf
-Why would spikes all over the Crypt Lord’s body provide increased health regeneration? They are spikes, they hurt things when touched, that’s why it reflects damage.