You can cast cards like Fleshbag Marauder and sac them right away to produce three zombies, and theres plenty of good sacrifice fodder like Gravecrawler that work wonders in this context
Mana curve refers to how expensive each of the spells in your deck are
Be sure to check back after release and see if any of these picks drop in price, or are replaced by new expensive options

Abandon Hope Abandoned Sarcophagus Abstruse Appropriation Acquisition Octopus Adherent of Hope Aether Swooper Aetherstream Leopard Agent Bishop, Man in Black Ahn-Crop Champion Ahn-Crop Crasher Ahn-Crop Invader Airdrop Aeronauts Airdrop Condor Akroan Hoplite Alaborn Trooper Ambassador Blorpityblorpboop Ambush Paratrooper Ancestor's Prophet Ancient Copper Dragon Ancient Copper Dragon Ancient Cornucopia Anthropede Anthroplasm Anurid Brushhopper Aphemia, the Cacophony Arcane Encyclopedia Aretopolis Argothian Opportunist Arlinn, the Pack's Hope Arwen, Weaver of Hope Assassin's Trophy Astral Cornucopia Avacyn, Angel of Hope Avatar of Hope Aven Trooper Aven of Enduring Hope Battlewise Hoplite Bebop & Rocksteady Bebop, Skull & Crossbones Bebop, Warthog Warrior Biblioplex Assistant Biblioplex Kraken Biblioplex Tomekeeper Biophagus Bioplasm Bishop of Binding Bishop of Rebirth Bishop of Wings Bishop of the Bloodstained Bishop's Soldier Black Panther, Hope Enduring Black Poplar Shaman Black Widow, Daring Operative Blazing Hope Blood Baron of Vizkopa Blood Operative Bloodcrazed Hoplite Bloodrock Cyclops Bloodshot Cyclops Body Dropper Boosted Sloop Boromir, Gondor's Hope Brass Infiniscope Break Open Burning Prophet Bygone Bishop Cacophodon Cacophony Scamp Cacophony Unleashed Calamity, Galloping Inferno Call the Coppercoats Callous Oppressor

Its also a Goblin, which is relevant in the current Standard format given all the support
Mono-Blue Faeries: A tempo deck that uses [card]Spellstutter Sprite[/card] and [card]Ninja of the Deep Hours[/card] to control the game with counterspells and evasive creatures