About a week ago I made this custom DARK/Fiend deck with the idea of having a field-swarming deck that banished the opponent's monsters. This being the point of having Caius the Shadow Monarch, Lesser Fiend, Cost Down, and Double Summon. The setup I have here is pretty sloppy and I'm looking to either change or just recreate the deck entirely to fit the goal more appropriately. Can anyone suggest theme-fitting cards that'll do what I'm seeking? I am fine with switching the deck around to also include other types such as zombie or spellcaster.

I have a picture and a text list of the cards I currently have. I'm also lacking XYZ and Tuners. Those suggestions would be awesome, too.

DN Image:

List:

Need to add Dark Armed Dragon and Dark creator