Is this a good dark yugioh deck?

Ok, Way too many monster cards in there. Scrap the Vengeful Shinobi, Doomsday horror, Feral Imp and Dark Rabbit at least and try to get another copy of of Caius. Also try for At least one Doom shaman and two shadow delver cards. Allure of darkness would help the removal strategy if you do keep doomsday horror and Soul Absorption would be an esment. As for the Earthbound Immortal, well, what are the chances of that only field spell you have surviving. You should have at least three. Take other cards out of your deck as you see fit. Also, if your goal is a dark removal deck, perhaps you should put a spell/trap card that removes any cards sent to the gracyard e.g. Macro Cosmos.