Another Sister in this scheme, utilizing another one of those decorative marble bases.
I used to do these marble style bases for just about everything... especially 40k stuff. Not only was it easier to place the relatively flat feet of the figures onto the bases, it was easier to identify them as well. I could put all sorts of markings on the base to not only designate which army it was from, but rank, weapons, and so on.
Yes, I was asked one day it is was possible for me to play a game of 40k using only my bases... and I could answer yes! ;-)