Flying Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) 1/1
Target player discards a card. Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.)
Whenever an opponent casts a spell, that player loses 5 life unless they discard a card.
Landfall — Whenever a land you control enters, you may have target player lose 3 life. If you do, put three +1/+1 counters on Ob Nixilis, the Fallen. 3/3
Menace (This creature can’t be blocked except by two or more creatures.) When Relentless Dead dies, you may pay {B}. If you do, return it to its owner’s hand. When Relentless Dead dies, you may pay {X}. If you do, return another target Zombie creature card with mana value X from your graveyard to the battlefield. 2/2
Equipped creature gets +2/+0 and has deathtouch. {5}{B}{B}{B}: Until end of turn, Vorpal Sword gains “Whenever equipped creature deals combat damage to a player, that player loses the game.” Equip {B}{B}
At the beginning of your upkeep, you draw X cards and you lose X life, where X is the number of Zombies you control. 3/3
You may pay {W}{U}{B}{R}{G} rather than pay this spell’s mana cost. Trample At the beginning of your upkeep, you may pay 2 life. If you do, search your library for a card, then shuffle and put that card on top. 5/5
Whenever a creature dies, if it had a -1/-1 counter on it, put a -1/-1 counter on target creature.
Flying, trample You can’t win the game and your opponents can’t lose the game. 6/6
Sacrifice a creature, Return Recurring Nightmare to its owner’s hand: Return target creature card from your graveyard to the battlefield. Activate only as a sorcery.
Return all Zombie creature cards from your graveyard to the battlefield tapped, then destroy all Humans.
As an additional cost to cast this spell, sacrifice an artifact or creature. Draw two cards and create a Treasure token. (It’s an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)