Necro SF build

I used this build last night in some Oro farming. It worked great but I was wondering what the community would think of it. Other than the typical Echo'd Spiteful Spirit, I thought it was pretty original.



Skills:
1) Spiteful Spirit
2) Arcane Echo
3) Awaken the Blood
4) Blood Ritual
5) Power Drain
6) Leech Signet
7) Spinal Shivers (can be switched out with Well of Blood, Suffering, Enfeebling Blood)
8) Res Sig

Spinal Shivers is great with Villnar's Staff and another necro. Talk about shutting down a monk boss. Sure the energy loss is pretty severe, but it's manageable.

Anyway... comments? Critiques?

No? No one at all?