I just thought of a rather strange idea(as I always do), but stay with me here. What do you think of running Zekrom/Tornadus with an Electrode Prime engine? It charges up pretty fast(most likely T2), and the significant thing I see here is that you don't let Goth and Truth fall behind on prizes so they can't use their valuable Twins engine. I'm not sure whether you would still run Pachirisu here though. I mean you still want the donk, but it would make the deck clunkier in longer games. Maybe run just one, and a Shaymin or two is good regardless. Remember you would need to run a lot of energy. Again, just another idea of mine, but give it some thought and maybe try it out if you have the time.