Ahh yes, my signature deck. Everyone at locals and a lot of people on DN know me for playing it since far back. I made the first version of my Harpie Lady deck back in 2006. This is what my IRL deck looks like right now. It's still going through a lot of changes and I'm not sure which way to go with it. The best it's gotten me in a tournament is third place. I'm not using any rank 7s because those are way too expensive.
Here are some explanation to tech choices:
Forbidden Dress: (yes, Dress) Helps stopping Veilers, Fiendish Chains and other things you don't want targeting your summoners.
Magical Hats: Protects cards from being destroyed in battle and put Hysteric Sign in your grave for an easy +3.
Mist Valley Soldier: A wind winged-beast level 4 tuner that works to make any XYZ I use and Scrap Dragon/Stardust Dragon. It also bounces cards like Dracossack.
Play a Summoner Monk, pitch Sign, summon Mist Valley Soldier, tune a Stardust and get three Harpie cards in your hand at the end phase. That's always nice.
Nightmare Papilloperative: Used With Chidori you can lock your opponent into drawing the same card over and over without being able to do anhything.
Black Horn: It kills nasty XYZ/Synchros that would be hard to get over.
Steelswarm Roach: Mostly anti Synchro decks.
Divine Wrath: It stops any monster effect anywhere and it let's me drop Sign to the grave.
One Cyber Harpie as a beastick, two Harpie Lady 1s to get quick OTKS.
MVP cards for this deck are:
Lightning Chidori: The problem sovler
Hysteric Party: OTK and combo enabler
Magical Hats: Adding a much needed consistency
Maestroke: Because you need something that stays on the field sometimes.
Harpie Dancer: Queen of everything. She dodges BTH and enables crazy plays.
Harpie Channeler: She is just the best.
Here is a rank 7 version I'm testing too. It's very consistent.