Carrion Feeder can't block. Sacrifice a creature: Put a +1/+1 counter on Carrion Feeder.

{3}, {T}, Sacrifice another Zombie: Create two tokens that are copies of the sacrificed creature.

{1}{B}, {T}, Discard a card: Create a 2/2 black Zombie creature token. Tap three untapped Zombies you control: You draw a card and you lose 1 life.

Skeletons you control and other Zombies you control get +1/+1 and have deathtouch.

Diregraf Colossus enters the battlefield with a +1/+1 counter on it for each Zombie card in your graveyard. Whenever you cast a Zombie spell, create a tapped 2/2 black Zombie creature token.

Zombies you control have flying. {U}, {T}, Sacrifice another nontoken creature: Create an X/X blue Zombie creature token, where X is the sacrificed creature's toughness.

{B}, {T}, Sacrifice another creature: Create X 2/2 black Zombie creature tokens, where X is the sacrificed creature's power.

Gravecrawler can't block. You may cast Gravecrawler from your graveyard as long as you control a Zombie.

Grimgrin, Corpse-Born enters the battlefield tapped and doesn't untap during your untap step. Sacrifice another creature: Untap Grimgrin and put a +1/+1 counter on it. Whenever Grimgrin attacks, destroy target creature defending player controls, then put a +1/+1 counter on Grimgrin.

Whenever Headless Rider or another nontoken Zombie you control dies, create a 2/2 black Zombie creature token.

Flying Other Zombies you control have flying. Whenever one or more Zombies you control deal combat damage to one or more of your opponents, you may draw cards equal to the number of opponents dealt damage this way. If you do, discard that many cards.

Other Zombie creatures get +1/+1. {1}{B}, {T}: Return target Zombie card from your graveyard to your hand.

Other Zombies you control get +1/+1. {2}{B}, {T}, Sacrifice a creature: Return a Zombie creature card at random from your graveyard to the battlefield. Activate only during your turn and only if there are at least three Zombie creature cards in your graveyard.

Zombie spells you cast cost {1} less to cast. Zombie creatures you control get +2/+1.

At the beginning of your upkeep, create X 2/2 black Zombie creature tokens, where X is half the number of Zombies you control, rounded down.

Whenever a nontoken Zombie enters the battlefield under your control, create a token that's a copy of that creature.