Quite... interesting. Y'know, given my past experiences making Altars, you'd think I'd have something important to say about this one.
I guess my only issue (aside from TC?) is that the head should really be modified a bit to appear less like a Crypt Fiend; one thing all the Altar's do really well is having sort of a faceless, featureless representation of each race (stoic Human statue, barbaric Orc statue, wise Night Elf statue, vile Undead statue, cunning Naga statue, vicious Troll God statue, etc). This not only has features (eyes mainly) but the texture appears to be the same... Is there some kind of stone something that could be used?
I like the shape, however (interesting & unique, having it bubble up like that). The towers might get lost in all the other buildings having towers, but it looks nice.