Regirock is Climbing a Mountain Why is He Climbing a Mountain?
My personal list for the Regis. The focus is on consistently getting out the Regis. With 8 draw supporters, you generally are able to survive Marnies and ultimately get to play most games and get set up by the second turn. The use of Capture Energy, thick ball search lines, and Stormy Mountains gives you reliable setups so long as you can find the energy. I would consider cutting a card or two (twin?, ASR Leki?) to add in Energy Loto to help improve access to early game Auroras and Speed Energies.