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.)

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.)

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.

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.

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.

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.

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

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.

{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.

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

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.

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.

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.

Indestructible As long as your devotion to black and green is less than seven, Pharika isn't a creature. {B}{G}: Exile target creature card from a graveyard. Its owner creates a 1/1 black and green Snake enchantment creature token with deathtouch.

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.

Other Snake creatures you control get +0/+1. Shamans you control have "{T}: Add {G}{G}."

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

Other Snake creatures you control get +2/+2. Whenever a Snake you control deals combat damage to a player, you may draw a card.

When Shambling Swarm dies, distribute three -1/-1 counters among one, two, or three target creatures. For each -1/-1 counter you put on a creature this way, remove a -1/-1 counter from that creature at the beginning of the next end step.

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

Other Snake creatures you control get +1/+0. Whenever a Warrior you control deals combat damage to a creature, destroy that creature at end of combat.

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.

As long as a creature has a -1/-1 counter on it, Tenacious Hunter has vigilance and deathtouch.

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

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

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

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

If a noncreature permanent under your control was destroyed this turn by a spell or ability an opponent controlled, you may pay {G} rather than pay this spell's mana cost. Create four 1/1 green Snake creature tokens.

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.)

Target creature you control gains hexproof until end of turn. Remove all -1/-1 counters from it. (A creature with hexproof can't be the target of spells or abilities your opponents control.)

Target creature gets +2/+2 until end of turn. You may remove a -1/-1 counter from it.

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.)

{T}: Add {C}. {2}, {T}: Put a +1/+1 counter on target Bird, Cat, Dog, Goat, Ox, or Snake.

({T}: Add {G}.)

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

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.

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

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.

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

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.

Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.) Target creature you control fights up to one target creature you don't control.