There are plenty of ways to make zombies while getting additional utility, but the recursion aspect seems to be the only archetype that took off. Let's see if we can change that...
Token Makers (on a stick)
Cryptbreaker, Diregraf Colossus: Cryptbreaker provides card advantage and can power up Colossus, while trading unneeded cards for bodies. Colossus gets bigger the later in the game it drops, and once down can make a token every turn.
Spells
Dark Salvation, Liliana's Mastery: both spells help produce tokens while providing additional benefits. Salvation is removal that scales to board state and gets more potent as our swarm grows. It doesn't take long to surpass Grasp of Darkness in range. Mastery brings a huge power boost to a board full of zombies and gets better after the first one (the second one makes two 4/4s for 5 mana).
Liliana, the Last Hope can play defense while adding a recursion aspect if one of our token generators gets killed or to bring back duplicates discarded to Cryptbreaker. And of course her ultimate is designed for a deck like this.
Dread Wanderer is a solid aggressor that hangs around for grindier games. Ideal card to discard to Cryptbreaker as it can be brought back later. Basically soaks up Magma Spray but if it helps Relentless then it's all gravy.
Relentless Dead should pretty much always be played Turn 3 at the earliest, to leave up . This discourages kill spells. In later turns it also often wise to leave up even more mana to bring back a few friends. This discourages sweepers/wraths. This dude is the synergy lynchpin that gives the deck legs to make it through to later turns. The menace just allows for some consistent pressure, as people will seldom double block if he'll just comeback to hand and maybe bring a guest.
Lord of the Accursed can add quite a bit of power to the board, making the tokens created by Diregraf Colossus and powered up by Liliana's Mastery even more threatening. The Menace isn't used a ton but can help you break through their lines to get the final points of damage.
Fatal Push and Grasp of Darkness can keep the board clear until you have a pumped up horde of zombies. Particularly nice mainboard against Ramunap Red, the mirror, Mardu Vehicles, Temur Energy, and R/G Pummeler. Not at 4/4 main board because of the few control decks, ramp decks, New Horizons and other combo decks lingering in the outskirts.
Kalitas, Traitor of Ghet was initially in the sideboard but with the plethora of Aggro he's been promoted to the big leagues.
Now being played by pros with a #1 finish at a pro tour! (Outdated, sadly)
Sideboard breakdown to come...
Suggestions and +1s always appreciated!
Also see Zombie Belcher (Post-Rotation Update), a deck of mine that is very similar but focuses on Plague Belcher.
More to come...
