Erebos, God of being Hated by your friends (EDH / Commander)

Do you like playing control? Do you want Cabal Coffers as your commander? Don't like having any friends? This deck is for you, a Monoblack control deck that uses discard to stall the game while it accrues metric tons of mana and cards with its commander: Erebos, God of the dead.
Make the table discard in the early game, slam Erebos down and start drawing cards while you keep the board in check with your removal, then cast Exsanguinate or Torment of Hailfire for a billion mana with your true commander: Cabal Coffers, the deck also has a minor zombie theme going on, there are many good zombies that are worth recurring with Unholy Grotto. Did you discard a win condition? No problem, just Elixir it back to the deck. Did you discard a threat? No problem, just reanimate it. Just be careful to not discard cabal coffers. With Erebos, your opponents can't gain life, wear them down them slam a pestilence and kill everyone!

Sideboard includes planned upgrades that I want to make to the deck
Maybeboard includes cards I want to try out but I don't think will make the cut