Black Series Centerpiece Starkiller Base (Rey Vs Kylo Ren)

I bought this Star Wars set from The Force Awakens, solely for the purpose of using the it as a diorama. I was got it at toy fair while it was on sale and have no intention of keeping Rey and Kylo Ren figures. Anyway, Rey is in fix pose whereas the battle damaged Kylo Ren is an articulated figure with detachable light saber. 

With batteries, the forest backdrop as well as the molten lava would light-up. I read the instruction manual and it says that if water is introduced into the chamber at the base, the set can even produce mist. How awesome is that! It would be even better if the lightsaber can also glow. Can't be too greedy yah...