Masochism/Vamp spirit?

I've been looking arround a bit for a new build, and remembered something about vamp spirit when i scrolled over masochism.

At 13 SR, masochism gives 4 energy whenever you sac health.
With 18 BM (using awaken the blood), vamp spirit causes spells to cost 3 more energy, but spells which sac life do have 59 life steal from a nearby foe.

So in total, each sac spell does +59 life steal and gives 1 energy.

This means a healthy constant heal, and nice damage buff.
Then attack with Dark pact and Blood of the agressor.
These are easy to spam (1 sec cast and 2-3 sec recharge), and because of the enchantments only cost 4E to do arround 110 dmg, of which at least half is life steal.
Add in Signet of lost Souls for some more energy control and heal, and i believe one has a rather solid build.

With Masochism, Vampiric Spirit {e}, Awaken the Blood, Dark Pact, Blood of the Agressor and Signet of Lost Souls, there are still 2 skill slots left for utility skills.
Since the attacks are only focussed for 1 target, i believe Asuran Scan might be the perfect addition.

Any toughts?

Dark Aura maybe? for more damage when saccing?

you need a snare or your target can just run away and only take blood of the agressor's damage. otherwise, it's a good idea.

I like that idea, i've been using the same basic idea with my meleemancer

I've mentioned this possibility, however I don't think using AtB is good when you sac.

Asuran Scan might not be too good since the attacks aren't focused on one single target - Vamp Spirit steals from any foe at random.

AtB is indeed not good when you sac, but you gain 60 health each time you sac, so with the 10% sac to loose health you need to have 600+hp (which you wont cause of the sup rune).
Even still, once the mob is under 50% hp you get a heal trough the signet if it does go wrong.

As for the scan, life steal is always life steal.. even if on the same target it wont be amplified. But this was just a suggestion.