I was advised to include one Keldeo EX (BC) in my deck due to its ability "Rush In". My deck is a Victini EX variant, so Keldeo's ability is the only useful aspect for which to include it. I'm wondering why this is a good idea? I understand that Keldeo can switch out your active pokemon quickly, but where do I go from there once Keldeo is my active pokemon with no energies? Is a float stone the only possible combo for this trick, or is there something I'm missing? Is Keldeo EX a common staple in non-meta decks?