Ngl kinda weird but it kinda makes sense. Basically, you just want to get meowscarada ex and iron valiant onto your bench as fast as possible to load up damage counters on your opponents pokemon. With just discarding 2 energies, you can do 370 damage. The lost energies can easily be compensated with superior energy retrieval.
Manaphy is kinda a problem though so i need some recommendations on how to deal with it.