Those option from the graveyard a big part of what makes decks like these feel like a real dredge deck. I like anything you can cast from the grave, stuff like Demonic Embrace, Corpse Connoisseur, Rotting Rats, even something like Maximize Velocity isnt totally bad as it discards. Going 5 color you would get Unburial Rites and Sevinnes Reclamation targeting Animate/Dance of the Dead as more 'prized amalgam' type ways to get threats on the battlefield using nothing but your graveyard.

And Lord of Extinction + Berserk can always win some games.

It's not going to ever be 'competitive' with only combat damage to win but it feels like dredge. Buy Dredge the Mire from Starter Commander Decks and a wide range of Magic: the Gathering single cards, booster and decks from Magic Madhouse Free UK. Since classic dredge threats like Prized Amalgam and Ichorid are just not going to get there in commander the cards that get big like Lord of Extinction and Sewer Nemesis and the cards you can get from the grave like Hogaak, Centaur Vinecrasher, Dread Return etc do a good job of replicating the playstyle. I love dredge and tried to replicate the playstyle as best I could. This is my dredge list with the 4 color non white nephilim as commander.

Dredge edh decks