Best Unit in the Game... Any thoughts?

[CUnknown]

PvK -- balanced relative to what? I think tartarians -are- balanced relative to other level 9 summons that require 7 levels of magic to cast, don't you? I mean, clearly, it wouldn't be appropriate to have them balanced on a per gem basis with, say, a level 1 summons that only requires 1 or 2 levels of magic to cast (e.g. a Black Servant).