Zurzoth Loves You (EDH / Commander)

Since the deck makes players discard cards at random and this will drive many people insane, ask your playgroup before bringing this to the table.

Main strategy:
Get Zurzoth down and have the entire table draw (and potentially discard) cards to create devils. Use devils to ping down threats and life totals. Use cards like Purphoros, God of the Forge and Impact Tremors to cause more damage when the devils enter, use cards like Cavalcade of Calamity and Hellrider to do more damage when they attack, and Spiteful Prankster to do more damage when they die. Increase the output of the devils with cards like Torbran, Thane of Red Fell and Fiery Emancipation.

The damage adds pretty quickly. For example, with a damage doubler and something like Impact Tremors on board, each devil represents 4 damage without doing anything else: two damage coming in, two damage dying. In a more magical Christmasland scenario with Torbran, Fiery Emancipation, Impact Tremors, Hellrider, and Spiteful Prankster each devil represents 20 damage (!!!) - 5 entering, 5 attacking, 10 on death (opponents choose the stacking of effects).

Mikokoro, Center of the Sea, Geier Reach Sanitarium, Temple Bell, and Otherworld Atlas trigger draws for the table and can create up to three devils each cycle around the table.

Bag of Holding, Conspiracy Theorist, and Containment Construct mitigate the discard from the rummaging effect from Zurzoth's devil attack triggers.

Impulse draw effects like Reckless Impulse and Light Up the Stage keep you flush with options as your other effects rummage. These also help make sure you hit your land drops without discarding them.

Descent of the Dragons or Shared Animosity and a board full of devils give you reach in the end game.

Notable exclusions:
Sin Prodder - Just doesn't work out most of the time - lands go straight to your graveyard and until the late game, so does most everything else.