I don't see how Gengar by itself is the play for Regionals, not when every G deck can Skuntank poison you and shut down Gengar's Poke-Power. Unown G here and there, so you can snipe key Pokemon with Gengar, and your left to just rely on Poltergeist to get all 6 prizes. Good luck.
Now Gengar/Machamp seems like a better idea. Can't say it is the play for Regionals, though. Players are smart, and I doubt they will bring decks to Regionals that have bad matchups against the deck that was the metaplay for States.
Now Gengar/Machamp seems like a better idea. Can't say it is the play for Regionals, though. Players are smart, and I doubt they will bring decks to Regionals that have bad matchups against the deck that was the metaplay for States.