When Contagion Clasp enters, 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 this artifact enters, put a -1/-1 counter on each creature target player controls. {4}, {T}: Proliferate twice. (Choose any number of permanents and/or players, then give each another counter of each kind already there. Then do it again.)

This artifact enters with three arrowhead counters on it. At the beginning of your upkeep, if there are no arrowhead counters on this artifact, sacrifice it. {T}, Remove an arrowhead counter from this artifact: Put a -1/-1 counter on target creature.

When this creature enters, you may put a -1/-1 counter on target creature. {B}, Sacrifice this creature: Destroy target creature that has 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.)

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) When this creature dies, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

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

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) {1}{R}, {T}: This creature deals 1 damage to any target.

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Flying Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) Sacrifice a creature: Flesh-Eater Imp gets +1/+1 until end of turn.

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

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) Other creatures you control with infect get +1/+1. Whenever you cast a creature spell with infect, target player gets a poison counter.

Wither (This deals damage to creatures in the form of -1/-1 counters.) {2}{R}, {Q}: This creature deals damage equal to its power to any target. ({Q} is the untap symbol.)

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) When this creature enters, each player gets a poison counter.

Flying Wither (This deals damage to creatures in the form of -1/-1 counters.) Creatures your opponents control with counters on them can't attack or block.

Wither (This deals damage to creatures in the form of -1/-1 counters.) When this creature dies, put a -1/-1 counter on each creature with a -1/-1 counter on it.

Menace Creatures you control have wither. (They deal damage to creatures in the form of -1/-1 counters.) Whenever a creature an opponent controls dies, if its toughness was less than 1, 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 this creature 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.

At the beginning of each opponent's upkeep, they lose 1 life and you put a -1/-1 counter on up to one target creature they control. 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.)

First strike, protection from red and from white Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

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

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}.

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

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

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

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

When this creature enters, put three -1/-1 counters on target creature.

Flying Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) {B}: Skithiryx gains haste until end of turn. {B}{B}: Regenerate Skithiryx.

If a source you control would deal noncombat damage to an opponent or a permanent an opponent controls, it deals double that damage to that player or permanent instead. {1}{R/P}{R/P}, Discard two cards: Put an indestructible counter on Solphim. ({R/P} can be paid with either {R} or 2 life.)

Whenever this creature enters or attacks, put a -1/-1 counter on up to one target creature. Creatures your opponents control with -1/-1 counters on them can't block.

Wither (This deals damage to creatures in the form of -1/-1 counters.) Whenever this creature deals damage to a player, that player can't gain life for the rest of the game.

Flying If a source you control would deal damage to an opponent or a permanent an opponent controls, it deals double that damage instead.

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

Enchant creature Enchanted creature has "{T}: This creature deals damage equal to its power to any target."

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

Whenever a creature you control enters, you may pay {2}{R}. If you do, that creature deals damage equal to its power to any target.

Enchant creature Enchanted creature has infect. At the beginning of your upkeep, put a -1/-1 counter on enchanted creature. When this Aura is put into a graveyard from the battlefield, return it to its owner's hand.

If a creature you control would deal damage to a permanent or player, it deals double that damage instead.

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

Whenever a creature deals damage to you, destroy it.

Nontoken creatures you control have riot. (They enter with your choice of a +1/+1 counter or haste.) If a creature you control with a +1/+1 counter on it would deal damage to a permanent or player, it deals double that damage instead.

Tap target untapped creature. That creature deals damage equal to its power to its controller.

Until end of turn, all creatures gain "{T}: This creature deals damage equal to its power to target 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.)

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

Wither (This deals damage to creatures in the form of -1/-1 counters.) Puncture Blast deals 3 damage to any target.

Puncture Bolt deals 1 damage to target creature. Put a -1/-1 counter on that creature.

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

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

Volt Charge deals 3 damage to any target. Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

{T}: Add {C}. {1}: This land becomes a 1/1 Phyrexian Blinkmoth artifact creature with flying and infect until end of turn. It's still a land. (It deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

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

({T}: Add {R}.)

+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.

Target creature gets -4/-4 until end of turn. 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.

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.

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

Target creature gets -1/-1 until end of turn. Draw a card.

Whenever you put one or more counters on a permanent or player, this enchantment deals that much damage to target opponent, creature an opponent controls, or planeswalker an opponent controls.

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.) When this creature dies, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) When this creature enters, you may return target creature card with infect from your graveyard to your hand.

When this creature enters, put a -1/-1 counter on target creature.

Players can't gain life. Damage can't be prevented. All damage is dealt as though its source had wither. (A source with wither deals damage to creatures in the form of -1/-1 counters.)

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

Enchant creature As long as enchanted creature is black, it gets +1/+1 and has wither. (It deals damage to creatures in the form of -1/-1 counters.) As long as enchanted creature is red, it gets +1/+1 and has first strike.

This creature enters with four -1/-1 counters on it. When this creature dies, put a -1/-1 counter on target creature for each -1/-1 counter on this creature.

This creature enters with three -1/-1 counters on it. Remove a -1/-1 counter from this creature: Put a -1/-1 counter on another target creature.

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) Whenever this creature becomes blocked, it gets +2/+2 until end of turn.

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) {R}: This creature gets +1/+0 until end of turn.

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.) Whenever a source deals damage to this creature, that source's controller gets a poison counter.

Whenever you cycle or discard a card, you may pay {1}. If you do, put a -1/-1 counter on target creature.

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

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

Choose target creature. Roll a six-sided die. 1 — It has base toughness 1 until end of turn. 2 — Put two -1/-1 counters on it. 3 — Six-Sided Die deals 3 damage to it and you gain 3 life. 4 — It gets -4/-4 until end of turn. 5 — Destroy it. 6 — Exile it.

Prowess If a source you control would deal noncombat damage to a creature an opponent controls, put that many -1/-1 counters on that creature instead.

{T}, Pay 1 life: Destroy target permanent you own. {T}, Pay 2 life: Add one mana of any color. {T}, Pay 3 life: Proliferate. {T}, Pay 4 life: Draw a card. {5}: Untap this artifact.

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 of their choice or discard a card.

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

This artifact enters with three charge counters on it. {B}{B}, {T}: Put a charge counter on this artifact. {2}, {T}, Remove a charge counter from this artifact: Put a -1/-1 counter on target creature.