Cumulative upkeep--Put a -1/-1 counter on Aboroth. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

When Acidic Slime enters the battlefield, destroy target artifact, enchantment, or land.

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.

{B}, Sacrifice a creature: Destroy target nonblack creature.

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.

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.

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.

Choose one or more --

• Destroy target artifact.

• Destroy target creature.

• Destroy target enchantment.

• Destroy target land.

• Destroy target planeswalker.

{T}: Choose any number of target creatures. Each of those creatures gains persist until end of turn. (When it 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.)

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.

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.)

Black creatures you control have wither. (They deal damage to creatures in the form of -1/-1 counters.)

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.)

Haste

When Crocodile of the Crossing enters the battlefield, put a -1/-1 counter on target creature you control.

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

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

If you control a commander, you may cast this spell without paying its mana cost.

Exile target creature.

At the beginning of your upkeep, put a spore counter on Deathspore Thallid.

Remove three spore counters from Deathspore Thallid: Create a 1/1 green Saproling creature token.

Sacrifice a Saproling: Target creature gets -1/-1 until end of turn.

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.

Landfall -- Whenever a land enters the battlefield under your control, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

{G}, Sacrifice a creature: Reveal cards from the top of your library until you reveal a creature card. Put that card into your hand and the rest on the bottom of your library in a random order.

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.

If it's not your turn, you may exile a green card from your hand rather than pay this spell's mana cost.

Destroy up to two target artifacts and/or enchantments.

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

When Generous Patron enters the battlefield, support 2. (Put a +1/+1 counter on each of up to two other target creatures.)

Whenever you put one or more counters on a creature you don't control, draw a card.

Geralf's Messenger enters the battlefield tapped.

When Geralf's Messenger enters the battlefield, target opponent loses 2 life.

Undying (When this creature 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.)

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.

Whenever a creature you control dies, each other player sacrifices a creature.

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.

{T}: Add {C}.

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

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.

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.)

Equip {0}

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.

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.

Whenever a creature you control dies, you gain 1 life and draw a card.

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.

{T}: Add {C}.

{1}, {T}: Move a counter from target permanent you control onto another target permanent. Activate only as a sorcery.

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.

Oran-Rief, the Vastwood enters the battlefield tapped.

{T}: Add {G}.

{T}: Put a +1/+1 counter on each green creature that entered the battlefield this turn.

Whenever a creature enters the battlefield under your control, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on the creature, then put the card back or put it into your graveyard.)

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.

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

{T}: Add {C}.

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

Choose four. You may choose the same mode more than once.

• Create a 2/2 Citizen creature token that's all colors.

• Return target permanent card from your graveyard to your hand.

• Proliferate.

• You gain 4 life.

Reach (This creature can block creatures with flying.)

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

Whenever another creature dies, each opponent loses 1 life.

Flying

When Puppeteer Clique enters the battlefield, put target creature card from an opponent's graveyard onto the battlefield under your control. It gains haste. At the beginning of your next end step, exile it.

Persist (When this creature 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.)

Destroy target artifact or creature. It can't be regenerated.

{T}: Add {C}.

{4}, {T}: Target creature can't be blocked this turn.

Enchant creature

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

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.

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

Equipped creature gets +1/-1.

Whenever equipped creature dies, draw two cards.

Equip {1}

{4}, {T}, Discard your hand: Draw a card for each creature you control.

Each opponent sacrifices a creature or planeswalker with the highest mana value among creatures and planeswalkers they control.

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.

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

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

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

Target creature gets +1/+0 and gains infect until end of turn. (It deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

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.

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.

{T}: Until end of turn, target creature has base power 1 or base toughness 1.

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

When Viridian Corrupter enters the battlefield, destroy target artifact.

Vigilance, trample

Undying (When this creature 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.)

{T}: Add {C}.

{5}, {T}, Pay 1 life: Create a 1/1 white and black Human Cleric creature token.

{5}, {T}, Sacrifice five creatures: Transform Westvale Abbey, then untap it.

Flying, lifelink, indestructible, haste

Equipped creature can't be blocked and has shroud. (It can't be the target of spells or abilities.)

Equip {2}

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.)