Of course, in terms of imagination, you've come up with something pretty good... It looks impressive, I won't argue, although there seem to be a lot of vampire enthusiasts here...
But I'll repeat what I said before... How do you envision the balance with such a creature in the army? It could single-handedly mow down half the enemy army, and that's even considering that there will be more of them later... You could introduce a limit, but that won't help much. Imagine an army of Necropolis with 10,000 skeletons, etc., around 20 level 7 units, and one of your creatures instead of liches...
Would that be fun? Who would attack such an army?
Have you even seen the stats of a level 7 unit and compared them to a level 6 unit? They differ by about 10 points, and you're suggesting a difference of 100 points? How do you imagine that working?
