As such it's generally the best dredge card to have in your graveyard. Imp is the Dredge card with the biggest dredge ability, dredging a massive 5 cards into the graveyard each time it is returned to your hand. Not as useful a creature on the battlefield as Stinkweed Imp but can provide a chump blocker if necessary.

It doesn't dredge quite as deeply as Stinkweed Imp and so generally isn't quite as valuable but you need a good number of dredge cards in the deck to make sure you are dredging as often as possible. However, if we happen to Dredge it out of our library into the graveyard it will return from the graveyard to the battlefield and in the process trigger any copies of Prized Amalgam in there too. Narcomoeba is something of a dead card when drawn as we can only cast it off of a Gemstone Mine. It's a 2/1 threat which gains haste once you get your opponent down to 10 life which makes it all the more problematic for the opponent. It's one of the easiest ways to get Prized Amalgam out of the graveyard and probably the most common. Bloodghast is an easily recurrable threat that just requires you to play a land to get it back from the graveyard. This is a speedy way to pitch a lot of cards into your graveyard and get Dredging as early as possible which is very important to the deck. Combined with a Dredge card this allows you to sacrifice Neonate and discard the Dredge card to immediately Dredge back the card you discarded. However, the really relevant part is that you can sacrifice and discard a card to draw a card.

It's a one-mana creature with menace which is actually a decent little package in itself. Neonate rapidly became a staple of Dredge decks.

The sideboard in particular is a bit messy and needs more Collective Brutality but I did not have access to those at the time. My list is a mismash of existing lists that I found.

Good decks vs dredge modern