Threshold — Metamorphic Wurm gets +4/+4 as long as seven or more cards are in your graveyard.

When Necromancer's Covenant enters the battlefield, exile all creature cards from target player's graveyard, then create a 2/2 black Zombie creature token for each card exiled this way.
Zombies you control have lifelink.

When Noggle Bridgebreaker enters the battlefield, return a land you control to its owner's hand.

, Sacrifice Nosy Goblin: Destroy target face-down creature.

, Sacrifice Ouphe Vandals: Counter target activated ability from an artifact source and destroy that artifact if it's on the battlefield. (Mana abilities can't be targeted.)

At the beginning of your upkeep, if you have four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand.

( can be paid with either or 2 life.)
You may have Phyrexian Metamorph enter the battlefield as a copy of any artifact or creature on the battlefield, except it's an artifact in addition to its other types.

First strike
At the beginning of your upkeep, sacrifice Pit Spawn unless you pay .
Whenever Pit Spawn deals damage to a creature, exile that creature.

Destroy target artifact or land.
Suspend 4— (Rather than cast this card from your hand, you may pay and exile it with four time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, cast it without paying its mana cost.)

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)
Shroud (This creature can't be the target of spells or abilities.)
When a spell or ability an opponent controls causes you to discard Quagnoth, return it to your hand.

Relentless Rats gets +1/+1 for each other creature on the battlefield named Relentless Rats.
A deck can have any number of cards named Relentless Rats.

When Reliquary Monk dies, destroy target artifact or enchantment.

Target player discards a card at random.
Cycling (, Discard this card: Draw a card.)
When you cycle Resounding Scream, target player discards two cards at random.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Riptide Survivor is turned face up, discard two cards, then draw three cards.

Put target creature card from a graveyard onto the battlefield under your control. That creature is a black Zombie in addition to its other colors and types.

Whenever Rotlung Reanimator or another Cleric dies, create a 2/2 black Zombie creature token.

: Prevent all combat damage that would be dealt by target creature this turn.

: Target player exiles a card from their graveyard.
, Sacrifice Scrabbling Claws: Exile target card from a graveyard. Draw a card.

: Add .
, : Look at the top card of your library. If that card is snow, you may reveal it and put it into your hand. ( can be paid with one mana from a snow permanent.)