Blue/black zombies

[Shotgunbob]

Deck 72 cards, 12 sideboard I've been working on this deck for a standard tourney I know I need blue black lands but what else should I do with this deck to make it better? 1 {Ghost Quarter} 9 {Island} 11 {Swamp} 1 {Evolving Wilds} 22 lands 2 {Geralf's Mindcrusher} 4 {Diregraf Captain} 1 {Mikaeus, the Unhallowed} 2 {Geralf's Messenger} 1 {Phyrexian Crusader} 1 {Cryptoplasm} 1 {Phantasmal Image} 1 {Havengul Lich} 3 {Gravecrawler} 4 {Cemetery Reaper} 20 creatures 3 {Secrets of the Dead} 1 {Morbid Plunder} 1 {Increasing Ambition} 2 {Artful Dodge} 2 {Curse of Echoes} 2 {Go for the Throat} 2 {Mana Leak} 2 {Cancel} 3 {Doom Blade} 18 other spells Sideboard 4 {Drowned Catacomb} 4 {Darkslick Shores} 4 {Shimmering Grotto} 12 sideboard cards

[RevolverGunman]

I'd say take out the curses, they don't really support the theme of the deck and they dilute your win condition, same as the cemetary reapers. Diregraf Captain is the only lord you should need and you need to max yourself out on Lichs and Gravecrawlers since they make your deck work.