Nice! It took me a while to figure out how to play, but it was clearer once you played with the nodes a bit. Great potential to create some crazy attacks!
One thing that confused me at the start was that I added all my nodes at the same time so they all appeared on top of each other and moved together when I dragged them. I was dragging them around for a while trying to figure out how to add others until I hit the X on one and realised the others were underneath.