Afflict 3 (Whenever this creature becomes blocked, defending player loses 3 life.)

Whenever an opponent casts a spell, put a -1/-1 counter on Ammit Eternal.

Whenever Ammit Eternal deals combat damage to a player, remove all -1/-1 counters from it.

Lifelink

When Baleful Ammit enters the battlefield, put a -1/-1 counter on target creature you control.

When Banewhip Punisher enters the battlefield, you may put a -1/-1 counter on target creature.

{B}, Sacrifice Banewhip Punisher: Destroy target creature that has a -1/-1 counter on it.

Enchant creature

You control enchanted creature.

At the beginning of your upkeep, put a -1/-1 counter on enchanted creature.

Put X -1/-1 counters on each creature. Shuffle Black Sun's Zenith into its owner's library.

Whenever a creature dies, if it had a -1/-1 counter on it, put a -1/-1 counter on target creature.

As Canker Abomination enters the battlefield, choose an opponent. Canker Abomination enters the battlefield with a -1/-1 counter on it for each creature that player controls.

Flying

Carnifex Demon enters the battlefield with two -1/-1 counters on it.

{B}, Remove a -1/-1 counter from Carnifex Demon: Put a -1/-1 counter on each other creature.

Enchant creature you control

When Cartouche of Ambition enters the battlefield, you may put a -1/-1 counter on target creature.

Enchanted creature gets +1/+1 and has lifelink.

Chainbreaker enters the battlefield with two -1/-1 counters on it.

{3}, {T}: Remove a -1/-1 counter from target creature.

When Channeler Initiate enters the battlefield, put three -1/-1 counters on target creature you control.

{T}, Remove a -1/-1 counter from Channeler Initiate: Add one mana of any color.

{T}: Target player discards a card. Activate only during your turn.

Put a -1/-1 counter on Cinderhaze Wretch: Untap Cinderhaze Wretch.

When Contagion Clasp enters the battlefield, put a -1/-1 counter on target creature.

{4}, {T}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

When Contagion Engine enters the battlefield, put a -1/-1 counter on each creature target player controls.

{4}, {T}: Proliferate, then proliferate again. (Choose any number of permanents and/or players, then give each another counter of each kind already there. Then do it again.)

At the beginning of your upkeep, destroy target creature with a -1/-1 counter on it.

When Decimator Beetle enters the battlefield, put a -1/-1 counter on target creature you control.

Whenever Decimator Beetle attacks, remove a -1/-1 counter from target creature you control and put a -1/-1 counter on up to one target creature defending player controls.

When Defiant Greatmaw enters the battlefield, put two -1/-1 counters on target creature you control.

Whenever you put one or more -1/-1 counters on Defiant Greatmaw, remove a -1/-1 counter from another target creature you control.

Trample

Deity of Scars enters the battlefield with two -1/-1 counters on it.

{B/G}, Remove a -1/-1 counter from Deity of Scars: Regenerate Deity of Scars.

{T}: Add {G}.

Put a -1/-1 counter on Devoted Druid: Untap Devoted Druid.

Whenever Dusk Urchins attacks or blocks, put a -1/-1 counter on it.

When Dusk Urchins dies, draw a card for each -1/-1 counter on it.

When Exemplar of Strength enters the battlefield, put three -1/-1 counters on target creature you control.

Whenever Exemplar of Strength attacks, remove a -1/-1 counter from it. If you do, you gain 1 life.

When Festering Mummy dies, you may put a -1/-1 counter on target creature.

{2}{B}{B}: Put a -1/-1 counter on target creature.

Whenever a -1/-1 counter is put on a creature, you may create a 1/1 green Elf Warrior creature token.

Sacrifice Fume Spitter: Put a -1/-1 counter on target creature.

You may choose not to untap Giant Oyster during your untap step.

{T}: For as long as Giant Oyster remains tapped, target tapped creature doesn't untap during its controller's untap step, and at the beginning of each of your draw steps, put a -1/-1 counter on that creature. When Giant Oyster leaves the battlefield or becomes untapped, remove all -1/-1 counters from the creature.

Enchant creature

Enchanted creature has infect.

At the beginning of your upkeep, put a -1/-1 counter on enchanted creature.

When Glistening Oil is put into a graveyard from the battlefield, return Glistening Oil to its owner's hand.

{4}, {T}: Put a -1/-1 counter on target creature.

{T}: Add {C}.

{1}, {T}, Sacrifice Grasping Dunes: Put a -1/-1 counter on target creature. Activate only as a sorcery.

Put a -1/-1 counter on target creature, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Grim Poppet enters the battlefield with three -1/-1 counters on it.

Remove a -1/-1 counter from Grim Poppet: Put a -1/-1 counter on another target creature.

Whenever Hapatra, Vizier of Poisons deals combat damage to a player, you may put a -1/-1 counter on target creature.

Whenever you put one or more -1/-1 counters on a creature, create a 1/1 green Snake creature token with deathtouch.

At the beginning of your upkeep, put a -1/-1 counter on each creature.

{T}: Add {C}.

{T}, Pay 1 life: Add {B}.

{2}{B}{B}, {T}, Sacrifice a Desert: Put two -1/-1 counters on target creature an opponent controls. Activate only as a sorcery.

Put a -1/-1 counter on target creature, two -1/-1 counters on another target creature, and three -1/-1 counters on a third target creature.

Put a -1/-1 counter on target creature.

Draw a card.

Leech Bonder enters the battlefield with two -1/-1 counters on it.

{U}, {Q}: Move a counter from target creature onto a second target creature. ({Q} is the untap symbol.)

As an additional cost to cast this spell, put a -1/-1 counter on a creature you control.

Destroy target creature.

If damage would be dealt to Lichenthrope, put that many -1/-1 counters on it instead.

At the beginning of your upkeep, remove a -1/-1 counter from Lichenthrope.

Put a -1/-1 counter on each creature you don't control. You may search your library and/or graveyard for a card named Liliana, Death Wielder, reveal it, and put it into your hand. If you search your library this way, shuffle.

+2: Put a -1/-1 counter on up to one target creature.

-3: Destroy target creature with a -1/-1 counter on it.

-10: Return all creature cards from your graveyard to the battlefield.

Wither (This deals damage to creatures in the form of -1/-1 counters.)

When Lockjaw Snapper dies, put a -1/-1 counter on each creature with a -1/-1 counter on it.

{1}: Regenerate Matopi Golem. When it regenerates this way, put a -1/-1 counter on it.

Wither (This deals damage to creatures in the form of -1/-1 counters.)

At the beginning of your upkeep, put a -1/-1 counter on each nonblack creature.

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Whenever a Human deals damage to you, destroy it.

Other non-Human creatures you control get +1/+1 and have undying. (When a creature with undying dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

When Necropede dies, you may put a -1/-1 counter on target creature.

Wither (This deals damage to creatures in the form of -1/-1 counters.)

Whenever a creature an opponent controls with a -1/-1 counter on it dies, you may return that card to the battlefield under your control.

Whenever you put one or more -1/-1 counters on a creature, create that many 1/1 black Insect creature tokens.

Noxious Hatchling enters the battlefield with four -1/-1 counters on it.

Wither (This deals damage to creatures in the form of -1/-1 counters.)

Whenever you cast a black spell, remove a -1/-1 counter from Noxious Hatchling.

Whenever you cast a green spell, remove a -1/-1 counter from Noxious Hatchling.

Reach

Whenever Obelisk Spider deals combat damage to a creature, put a -1/-1 counter on that creature.

Whenever you put one or more -1/-1 counters on a creature, each opponent loses 1 life and you gain 1 life.

When Ornery Kudu enters the battlefield, put a -1/-1 counter on target creature you control.

Return target nonlegendary creature card from your graveyard to the battlefield with a -1/-1 counter on it.

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

If damage would be dealt to Phyrexian Hydra, prevent that damage. Put a -1/-1 counter on Phyrexian Hydra for each 1 damage prevented this way.

({B/P} can be paid with either {B} or 2 life.)

When Pith Driller enters the battlefield, put a -1/-1 counter on target creature.

Menace

When Plague Belcher enters the battlefield, put two -1/-1 counters on target creature you control.

Whenever another Zombie you control dies, each opponent loses 1 life.

Whenever Quagmire Lamprey becomes blocked by a creature, put a -1/-1 counter on that creature.

{B/G}, Remove a -1/-1 counter from a creature you control: Quillspike gets +3/+3 until end of turn.

Enchant creature

Enchanted creature has "{B}, {T}: Put a -1/-1 counter on target creature."

As an additional cost to cast this spell, put a -1/-1 counter on a creature you control.

Draw two cards.

Serrated Arrows enters the battlefield with three arrowhead counters on it.

At the beginning of your upkeep, if there are no arrowhead counters on Serrated Arrows, sacrifice it.

{T}, Remove an arrowhead counter from Serrated Arrows: Put a -1/-1 counter on target creature.

{T}: Put a -1/-1 counter on Serrated Biskelion and a -1/-1 counter on target creature.

Enchant creature

Enchanted creature doesn't untap during its controller's untap step.

Enchanted creature has "{1}, Put a -1/-1 counter on this creature: Untap this creature."

When you control no Islands, sacrifice Skeleton Ship.

{T}: Put a -1/-1 counter on target creature.

When Skinrender enters the battlefield, put three -1/-1 counters on target creature.

When Soul Snuffers enters the battlefield, put a -1/-1 counter on each creature.

When Soulstinger enters the battlefield, put two -1/-1 counters on target creature you control.

When Soulstinger dies, you may put a -1/-1 counter on target creature for each -1/-1 counter on Soulstinger.

Distribute two -1/-1 counters among one or two target creatures.

Put three -1/-1 counters on target creature with flying.

Cycling {2} ({2}, Discard this card: Draw a card.)

Sturdy Hatchling enters the battlefield with four -1/-1 counters on it.

{G/U}: Sturdy Hatchling gains shroud until end of turn. (It can't be the target of spells or abilities.)

Whenever you cast a green spell, remove a -1/-1 counter from Sturdy Hatchling.

Whenever you cast a blue spell, remove a -1/-1 counter from Sturdy Hatchling.

At the beginning of your upkeep, sacrifice Thelon's Chant unless you pay {G}.

Whenever a player puts a Swamp onto the battlefield, Thelon's Chant deals 3 damage to that player unless the player puts a -1/-1 counter on a creature they control.

Put three -1/-1 counters on target creature. Its controller loses 3 life unless they sacrifice another nonland permanent or discards a card.

Enchant creature

{1}{B}: Put a -1/-1 counter on enchanted creature.

At the beginning of your upkeep, sacrifice Tourach's Chant unless you pay {B}.

Whenever a player puts a Forest onto the battlefield, Tourach's Chant deals 3 damage to that player unless they put a -1/-1 counter on a creature they control.

Trigon of Corruption enters the battlefield with three charge counters on it.

{B}{B}, {T}: Put a charge counter on Trigon of Corruption.

{2}, {T}, Remove a charge counter from Trigon of Corruption: Put a -1/-1 counter on target creature.

Enchant creature

Enchanted creature gets +3/+3.

At the beginning of the upkeep of enchanted creature's controller, put a -1/-1 counter on that creature.

{2}{U}, {T}: Put a -1/-1 counter on target creature. You may tap or untap that creature.

Put a -1/-1 counter on target creature. When that creature dies this turn, its controller gets a poison counter.

At the beginning of combat on your turn, put a -1/-1 counter on up to one target creature.

{1}: Until your next turn, Volrath, the Shapestealer becomes a copy of target creature with a counter on it, except it's 7/5 and it has this ability.

Whenever Wicker Warcrawler attacks or blocks, put a -1/-1 counter on it at end of combat.

Wickerbough Elder enters the battlefield with a -1/-1 counter on it.

{G}, Remove a -1/-1 counter from Wickerbough Elder: Destroy target artifact or enchantment.

Whenever Witherscale Wurm blocks or becomes blocked by a creature, that creature gains wither until end of turn. (It deals damage to creatures in the form of -1/-1 counters.)

Whenever Witherscale Wurm deals damage to an opponent, remove all -1/-1 counters from it.

Protection from Humans

Pay 1 life, Sacrifice another creature: Put a -1/-1 counter on up to one target creature and draw a card.

{B}{B}, Discard a card: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)