I'll start things off by playing Harpie Lady in defense mode. Next, I activate the magic card Elegant Egotist. Since I control a Harpie Lady, I can now summon Harpie Lady Sisters in attack mode! And now I activate the spell Cyber Shield. This increases my Harpie Lady Sisters’  attack points by 500. And finally, I'll place one card facedown.  It's your move.

Then it's my move. I draw. I activate my Harpie Queen’s ability from my hand. By discarding from my hand, I get the field spell Harpie’s Hunting Ground. And now I'll activate it. And now, I summon another Harpie’s Queen to the field. And now that I have, Harpie’s Hunting Ground’s effect activates. I can destroy one spell or trap card on the field. So say goodbye to your facedown!

I activate my facedown card! The spell card Cost Down! By discarding one card from my hand to the graveyard, the level of all monster cards in my hand are reduced by 2. So I'll discard my Harpie Girl so I just have to just sacrifice my Harpie Lady so I can summon Harpie’s Pet Dragon! He gets 300 attack and defense points for every Harpie Lady on the field. And since Harpie Queen is treated as a Harpie Lady while on the field,  Harpie’s Pet Dragon’s attack and defense points increase. Now I play Monster Reborn! Now I get back my Harpie Lady from the graveyard. Now that I have another Harpie Lady on the field, Harpie’s Pet Dragon’s attack and defense points increase by another 300!