To make up for your it, you will need some heavy card cycling to replenish those frontlines

Mono Black Wizards Creature (29) 1x Apprentice Necromancer 1x Blood Scrivener 1x Bloodline Necromancer 1x Bloodtracker 1x Corpse Augur 1x Corpse Connoisseur 1x Crypt Ghast 1x Cunning Lethemancer 1x Disciple of Bolas 1x Dreamstealer 1x Flesh Carver 1x Ghoulcaller Gisa 1x Graveshifter 1x Gray Merchant of Asphodel 1x Grim Haruspex 1x Isareth the Awakener 1x Keeper of the Dead 1x Magus of the Abyss 1x Magus of the Coffers 1x Magus of the Will 1x Pit Keeper 1x Pitiless Plunderer 1x Puppeteer Clique 1x Sidisi, Undead Vizier 1x Thoughtpicker Witch 1x Undead Augur 1x Vindictive Lich 1x Viscera Seer 1x Xathrid Necromancer Artifact (15) 1x Altar of Dementia 1x Ashnod's Altar 1x Blasting Station 1x Bolas's Citadel 1x Charcoal Diamond 1x Coldsteel Heart 1x Cryptic Gateway 1x Everflowing Chalice 1x Fellwar Stone 1x Jet Medallion 1x Mind Stone 1x Nim Deathmantle 1x Phyrexian Altar 1x Sol Ring 1x Worn Powerstone Land (34) 1x Ancient Tomb 1x Bojuka Bog 1x Buried Ruin 1x Cabal Stronghold 1x Ebon Stronghold 1x Mirrorpool 1x Nykthos, Shrine to Nyx 1x Path of Ancestry 1x Reliquary Tower 25x Swamp Instant (4) Commander (1) Sorcery (12) 1x Buried Alive 1x Command the Dreadhorde 1x Demonic Tutor 1x Diabolic Intent 1x Dread Return 1x Exsanguinate 1x Fortuitous Find 1x Living Death 1x Mutilate 1x Torment of Hailfire 1x Toxic Deluge 1x Victimize

Then, if that creature spell has at least 4 power, you draw a card
This has been a really basic guide for how to build a commander deck, but I'm not stopping here
Are you building ElshaElsha, and if so, in which bracket
Our Advice for Rare Candy Collectors Know Your Symbols: This is more important than ever