Harpie Lady Primite

I am still working on this deck.

Some cards like Primite Drillbeam and Harpie's Feather Storm are too powerful for what I am trying to do as I am trying to balance two decks against each other where the outcome is a good back and forth duel.

Mecha Phantom Beast Dracossack and Wynn the Wind Charmer, Verdant  makes it so that Harpie Channeler and one other harpie card in your hand can go into Underworld Goddess of the Closed World if your opponant has one moster on their field and one wind monster in their GY.

For the main deck I do not think Harpie Oracle is worth it though I am giving it a chance as having harpie cards in the hand is very helpful for the deck.

The side deck are cards I am considering.

Any ideas on how to improve the deck without adding non-engine as for the games I am playing I ban most non-engine.