Any advice on a good dark world deck?

Question

I have already made one but i would like some suggestions on what other cards would be good for my deck. It is already good. i have a 27-2 record but i jus think something is missing.

Answer 1

add 3 brron, mad king of dark world, 1 the cheerful coffin (not a cost, you CAN discard UP TO 3 cards from your hand, dark world abuse), at least 2 cyber dragons (for swarm),and morphing jar (yes, hard to get, but it basically lets you summon all dark world cards for your hand).
they are also releasing new dark world cards in strike of neos.

Answer 2

this would be easier to answer if I knew what you already had in the deck.