Destroy target permanent an opponent controls. Its controller may search their library for a basic land card, put it onto the battlefield, then shuffle.

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

Counter target spell.

Copy target creature spell you control, except it isn't legendary if the spell is legendary. (A copy of a creature spell becomes a token.)

Look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order. 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, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Target creature you control deals damage equal to its power to target creature you don't control. Each opponent gets a poison counter.

Permanents you control with counters on them gain hexproof and indestructible until end of turn. Prevent all damage that would be dealt to those permanents this turn. Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Each opponent gets a poison counter. Draw a card.

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

Counter target spell. If that spell's mana value was 3 or less, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

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

{T}: Add one mana of any color in your commander's color identity.

{T}: Add one mana of any color in your commander's color identity. Sacrifice this artifact: Draw a card.

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.)

This artifact enters tapped. When this artifact enters, proliferate. {T}: Add one mana of any color. Corrupted — {T}: Add three mana of any one color. Activate only if an opponent has three or more poison counters.

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.) Equip {0}

{2}: This artifact becomes a copy of target artifact, creature, enchantment, or land until end of turn.

{T}: Add one mana of any color in your commander's color identity.

{T}: Add {C}. {2}, {T}: Put two +1/+1 counters on target non-Human creature that entered this turn.

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

({T}: Add {G}.)

({T}: Add {U}.)

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

This land enters tapped. {T}: Add {G}. Graft 1 (This land enters with a +1/+1 counter on it. Whenever a creature enters, you may move a +1/+1 counter from this land onto it.)

This land enters tapped. {T}: Add {C}. {2}, {T}, Sacrifice this land: Search your library for up to two basic land cards that share a land type, put them onto the battlefield tapped, then shuffle.

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

{T}: Add {C}. {G}{U}, {T}: Put a +1/+1 counter on each creature that entered this turn.

This land enters tapped. {T}: Add {B}, {G}, or {U}.

This land enters tapped. {T}: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

You have no maximum hand size. {T}: Add {C}.

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

({T}: Add {B}.)

This spell can't be countered. You may have this creature enter as a copy of any creature on the battlefield, except it enters with X additional +1/+1 counters on it.

Genomic Enhancement — {T}: Add one mana of any color. If this mana is spent to cast a creature spell, that creature enters with an additional +1/+1 counter on it.

At the beginning of the end step, if you control four or more creatures named Biovisionary, you win the game.

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) This creature can't be blocked.

You may have this creature enter as a copy of any nonland permanent on the battlefield.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.) Whenever this creature deals combat damage to a player, you may draw that many cards.

Trample, toxic 1 Whenever one or more creatures you control deal combat damage to one or more players, proliferate. Corrupted — At the beginning of your end step, if an opponent has three or more poison counters, draw a card, then you may put a land card from your hand onto the battlefield.

You may have this creature enter as a copy of any creature on the battlefield, except it has "{U}{B}, {T}: Destroy target creature with the same name as this creature."

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

When Ezuri enters, you may pay {3}. If you do, proliferate twice. Whenever you proliferate, draw a card.

Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.) Whenever a +1/+1 counter is put on this creature, you may draw a card.

Whenever a player casts a spell, you may put a +1/+1 counter on this creature. At the beginning of your upkeep, you may move any number of +1/+1 counters from this creature onto other creatures.

When this creature enters, 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.

Whenever Hapatra 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.

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.

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.

Each other creature you control enters with a number of additional +1/+1 counters on it equal to this creature's power and as a Mutant in addition to its other types.

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.

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

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

You may have this creature enter as a copy of any creature on the battlefield, except it has "At the beginning of your upkeep, if this creature isn't a token, create a token that's a copy of this creature."

Flying, trample When Roalesk enters, put two +1/+1 counters on another target creature you control. When Roalesk dies, 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.)

You may have this creature enter as a copy of a creature or planeswalker you control, except it enters with an additional +1/+1 counter on it if it's a creature, it enters with an additional loyalty counter on it if it's a planeswalker, and it isn't legendary.

Flying Whenever this creature deals combat damage to a player, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

At the beginning of each end step, put a slime counter on each creature you don't control. Creatures you don't control get -1/-1 for each slime counter on them. Whenever a creature you don't control with a slime counter on it dies, create a 1/1 black Slug creature token. {U}{B}, Sacrifice a Slug: Draw a card.

You may have this creature enter as a copy of any creature on the battlefield, except it enters with a shield counter on it if you control that creature. (If it would be dealt damage or destroyed, remove a shield counter from it instead.)

Indestructible Shadow (This creature can block or be blocked by only creatures with shadow.) Morbid — At the beginning of each end step, if a creature died this turn, put a +1/+1 counter on this creature.

{G}{U}, {T}: Double the number of each kind of counter on target artifact, creature, or land.

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

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

Whenever you cast a spell, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

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

At the beginning of your upkeep, draw a card if you control a creature with the greatest power among creatures on the battlefield. Otherwise, put a +1/+1 counter on a creature you control.

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

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.

You draw two cards and you lose 2 life. Each opponent gets a poison counter.

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.

Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

({U/P} can be paid with either {U} or 2 life.) Draw two cards, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)