Choose one --

• Exile target creature with power 3 or greater.

• You draw two cards and you lose 2 life.

• Distribute two +1/+1 counters among one or two target creatures.

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

Astral Cornucopia enters the battlefield with X charge counters on it.

{T}: Choose a color. Add one mana of that color for each charge counter on Astral Cornucopia.

Flying, vigilance, deathtouch, lifelink

At the beginning of your end step, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Deathtouch

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)

Flying

{T}: Add one mana of any color.

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

Blighted Agent can't be blocked.

Trample, infect, indestructible

If Blightsteel Colossus would be put into a graveyard from anywhere, reveal Blightsteel Colossus and shuffle it into its owner's library instead.

Trample

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)

Whenever Bloated Contaminator 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.)

{T}: For each color among permanents you control, add one mana of that color.

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

Chained Throatseeker can't attack unless defending player is poisoned.

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.)

Counter target spell if its controller is poisoned.

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)

When Crawling Chorus dies, create a 1/1 colorless Phyrexian Mite artifact creature token with toxic 1 and "This creature can't block."

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

{B}{B}: Target creature gains shadow until end of turn. (It can block or be blocked by only creatures with shadow.)

Search your library for a card, put that card into your hand, then shuffle.

Sunburst (This enters the battlefield with a +1/+1 counter on it for each color of mana spent to cast it.)

{1}, Remove four +1/+1 counters from Etched Oracle: Target player draws three cards.

Multikicker {2} (You may pay an additional {2} any number of times as you cast this spell.)

Everflowing Chalice enters the battlefield with a charge counter on it for each time it was kicked.

{T}: Add {C} for each charge counter on Everflowing Chalice.

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.)

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.)

When Ezuri, Stalker of Spheres enters the battlefield, you may pay {3}. If you do, proliferate twice.

Whenever you proliferate, draw a card.

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

Whenever a player casts a spell, you may put a +1/+1 counter on Forgotten Ancient.

At the beginning of your upkeep, you may move any number of +1/+1 counters from Forgotten Ancient onto other creatures.

Glistening Sphere enters the battlefield tapped.

When Glistening Sphere enters the battlefield, 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.

Whenever you cast a spell, 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.

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

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

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

Enchant creature you control

Enchanted creature has toxic 2. (Players dealt combat damage by it also get two poison counters.)

When enchanted creature dies, return that card to the battlefield under your control.

As an additional cost to cast this spell, sacrifice a creature.

Search your library for a creature card with mana value equal to 1 plus the sacrificed creature's mana value, put that card onto the battlefield with an additional +1/+1 counter on it, then shuffle.

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)

{T}: Add {G}, {W}, or {U}.

Whenever one or more creatures an opponent controls deal combat damage to you, that opponent gets a poison counter.

Whenever a player attacks, if one or more players being attacked are poisoned, the attacking player draws a card.

If one or more +1/+1 counters would be put on an artifact or creature you control, that many plus one +1/+1 counters are put on it instead.

{1}{G}, {T}: Put a +1/+1 counter on target artifact or creature you control. Activate only as a sorcery.

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

Each opponent gets a poison counter. Then each creature your opponents control gets -1/-1 until end of turn for each poison counter its controller has.

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.)

At the beginning of your upkeep, create a 1/1 green Phyrexian Insect creature token with infect for each poison counter your opponents have.

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

At the beginning of your upkeep, you get a poison counter.

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}.

Each opponent gets a poison counter.

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.)

Whenever a source deals damage to Reaper of Sheoldred, that source's controller gets a poison counter.

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

Whenever Septic Rats attacks, if defending player is poisoned, it gets +1/+1 until end of turn.

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, the Blight Dragon gains haste until end of turn.

{B}{B}: Regenerate Skithiryx.

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)

Skrelv, Defector Mite can't block.

{W/P}, {T}: Choose a color. Another target creature you control gains toxic 1 and hexproof from that color until end of turn. It can't be blocked by creatures of that color this turn. ({W/P} can be paid with either {W} or 2 life.)

Toxic 2 (Players dealt combat damage by this creature also get two poison counters.)

Whenever another creature you control with toxic attacks, it gets +1/+1 until end of turn.

Enchant creature

Enchanted creature has fear. (It can't be blocked except by artifact creatures and/or black creatures.)

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

{T}: Add {C}{C}.

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 Spinebiter assign its combat damage as though it weren't blocked.

Exile target creature. Its controller gains life equal to its power.

Flying

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)

Whenever another creature enters the battlefield under your control, you may pay {2}. If you do, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Flying

If you would proliferate, proliferate twice instead.

{1}{U/P}{U/P}, Remove three counters from among other artifacts, creatures, and planeswalkers you control: Put an indestructible counter on Tekuthal, Inquiry Dominus. ({U/P} can be paid with either {U} or 2 life.)

Flying

Whenever Thrummingbird 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.)

Creatures you control gain indestructible until end of turn.

Addendum -- If you cast this spell during your main phase, put a +1/+1 counter on each of those creatures and they gain vigilance until end of turn.

Enchant Forest

As Utopia Sprawl enters the battlefield, choose a color.

Whenever enchanted Forest is tapped for mana, its controller adds an additional one mana of the chosen color.

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)

Whenever a creature you control becomes the target of a spell, target opponent gets a poison counter.

Lifelink, toxic 1

Whenever you proliferate, choose one --

• If you don't control a creature named The Hollow Sentinel, create The Hollow Sentinel, a legendary 3/3 colorless Phyrexian Golem artifact creature token.

• Target artifact creature you control gains flying and lifelink until end of turn.

Flying

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)

When you proliferate, return Voidwing Hybrid from your graveyard to your hand.

Each opponent sacrifices a creature or planeswalker and gets a poison counter.

Compleated ({B/P} can be paid with {B} or 2 life. If life was paid, this planeswalker enters with two fewer loyalty counters.)

0: You draw a card and you lose 1 life. Proliferate.

-2: Target creature becomes a Treasure artifact with "{T}, Sacrifice this artifact: Add one mana of any color" and loses all other card types and abilities.

-9: If target player has fewer than nine poison counters, they get a number of poison counters equal to the difference.