Karn's Bastion{T}: Add {C}.
{4}, {T}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Karn's Bastion
Evolution SageLandfall — 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.)
Evolution Sage
Cankerbloom{1}, Sacrifice this creature: Choose one —
• Destroy target artifact.
• Destroy target enchantment.
• Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Cankerbloom
Yawgmoth, Thran PhysicianProtection 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.)
Yawgmoth, Thran Physician
ThrummingbirdFlying
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.)
Thrummingbird
Ripples of PotentialProliferate, then choose any number of permanents you control that had a counter put on them this way. Those permanents phase out. (To proliferate, choose any number of permanents and/or players, then give each another counter of each kind already there. Treat phased-out permanents and anything attached to them as though they don't exist until their controller's next turn.)
Ripples of Potential
Tezzeret's Gambit({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.)
Tezzeret's Gambit
Inexorable TideWhenever you cast a spell, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Inexorable Tide
Dreamtide WhaleVanishing 2 (This creature enters with two time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
Whenever a player casts their second spell each turn, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Dreamtide Whale
Tekuthal, Inquiry DominusFlying
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. ({U/P} can be paid with either {U} or 2 life.)
Tekuthal, Inquiry Dominus
Flux ChannelerWhenever you cast a noncreature spell, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Flux Channeler
Experimental AuguryLook 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.)
Experimental Augury
Vraska, Betrayal's StingCompleated ({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 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.
Vraska, Betrayal's Sting
Staff of Compleation{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.
Staff of Compleation
Contagion ClaspWhen this artifact 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.)
Contagion Clasp
Metastatic EvangelWhenever another nontoken creature you control enters, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Metastatic Evangel
Unnatural RestorationReturn target permanent card from your graveyard to your hand. Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Unnatural Restoration
Sword of Truth and JusticeEquipped creature gets +2/+2 and has protection from white and from blue.
Whenever equipped creature deals combat damage to a player, put a +1/+1 counter on a creature you control, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Equip {2}
Sword of Truth and Justice
Grateful ApparitionFlying
Whenever this creature deals combat damage to a player or planeswalker, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Grateful Apparition
Contagion EngineWhen 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.)
Contagion Engine
Mutational AdvantagePermanents 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.)
Mutational Advantage
Drown in IchorTarget 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.)
Drown in Ichor
AtomizeDestroy target nonland permanent. Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Atomize
Patrolling PeacemakerThis creature enters with two +1/+1 counters on it.
Whenever an opponent commits a crime, proliferate. (They commit a crime if they target an opponent, anything an opponent controls, and/or cards in an opponent's graveyard. To proliferate, you choose any number of permanents and/or players, then give each another counter of each kind already there.)
Patrolling Peacemaker
Contentious PlanProliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Draw a card.
Contentious Plan
Thirsting RootsChoose one —
• Search your library for a basic land card, reveal it, put it into your hand, then shuffle.
• Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Thirsting Roots
Atraxa, Praetors' VoiceFlying, 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.)
Atraxa, Praetors' Voice
Bloated ContaminatorTrample
Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)
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.)
Bloated Contaminator
Surge ConductorWhenever another nontoken artifact you control enters, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Surge Conductor
Blightbelly RatToxic 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.)
Blightbelly Rat
Ichormoon GauntletPlaneswalkers you control have "[0]: Proliferate" and "[−12]: Take an extra turn after this one."
Whenever you cast a noncreature spell, choose a counter on target permanent. Put an additional counter of that kind on that permanent.
Ichormoon Gauntlet
Glistening SphereThis 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.
Glistening Sphere
RadstormStorm (When you cast this spell, copy it for each spell cast before it this turn.)
Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Radstorm
Kilo, Apogee MindHaste
Whenever Kilo becomes tapped, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Kilo, Apogee Mind
Ezuri, Stalker of SpheresWhen Ezuri enters, you may pay {3}. If you do, proliferate twice.
Whenever you proliferate, draw a card.
Ezuri, Stalker of Spheres
Norn's ChoirmasterFlying, first strike
Whenever a commander you control enters or attacks, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Norn's Choirmaster
Lulu, Stern GuardianWhenever an opponent attacks you, choose target creature attacking you. Put a stun counter on that creature.
{3}{U}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Lulu, Stern Guardian
Agent Frank HorriganTrample
Agent Frank Horrigan has indestructible as long as it attacked this turn.
Whenever Agent Frank Horrigan enters or attacks, proliferate twice. (To proliferate, choose any number of permanents and/or players, then give each another counter of each kind already there.)
Agent Frank Horrigan
High Perfect MorcantWhenever High Perfect Morcant or another Elf you control enters, each opponent blights 1. (They each put a -1/-1 counter on a creature they control.)
Tap three untapped Elves you control: Proliferate. Activate only as a sorcery. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
High Perfect Morcant
Whisper of the DrossTarget creature gets -1/-1 until end of turn. Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Whisper of the Dross
Tidus, Yuna's GuardianAt the beginning of combat on your turn, you may move a counter from target creature you control onto a second target creature you control.
Cheer — Whenever one or more creatures you control with counters on them deal combat damage to a player, you may draw a card and proliferate. Do this only once each turn.
Tidus, Yuna's Guardian
Throne of Geth{T}, Sacrifice an artifact: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Throne of Geth
Tromell, Seymour's ButlerEach other nontoken creature you control enters with an additional +1/+1 counter on it.
{1}, {T}: Proliferate X times, where X is the number of nontoken creatures you control that entered this turn. (To proliferate, choose any number of permanents and/or players, then give each another counter of each kind already there.)
Tromell, Seymour's Butler
Contaminant GrafterTrample, 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.
Contaminant Grafter
Smell FearProliferate. (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.
Smell Fear
Cayth, Famed MechanistFabricate 1 (When this creature enters, put a +1/+1 counter on it or create a 1/1 colorless Servo artifact creature token.)
Other nontoken creatures you control have fabricate 1.
{2}, {T}: Choose one —
• Populate.
• Proliferate.
Cayth, Famed Mechanist
Serum SnareReturn target nonland permanent to its owner's hand. If that permanent had mana value 3 or less, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Serum Snare
Grim AfflictionPut 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 Affliction
Reject ImperfectionCounter 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.)
Reject Imperfection
Vexing RadgullFlying
Whenever this creature deals combat damage to a player, that player gets two rad counters if they don't have any rad counters. Otherwise, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Vexing Radgull
Filigree VectorWhen this creature enters, put a +1/+1 counter on each of any number of target creatures and a charge counter on each of any number of target artifacts.
{1}, {T}, Sacrifice another artifact: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Filigree Vector
Vat EmergencePut target creature card from a graveyard onto the battlefield under your control. Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Vat Emergence
Steady ProgressProliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Draw a card.
Steady Progress
Expand the SphereLook at the top six cards of your library. Put up to two land cards from among them onto the battlefield tapped and the rest on the bottom of your library in a random order. If you put fewer than two lands onto the battlefield this way, proliferate a number of times equal to the difference. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Expand the Sphere
Pollenbright DruidWhen this creature enters, choose one —
• Put a +1/+1 counter on target creature.
• Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Pollenbright Druid
Recon Craft ThetaFlying
When this Vehicle enters, create a 0/0 blue Alien creature token. Put a +1/+1 counter on it.
Whenever this Vehicle attacks, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Crew 2
Recon Craft Theta
Carnivorous CanopyDestroy target artifact, enchantment, or creature with flying. If that permanent'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.)
Carnivorous Canopy
Expansion AlgorithmProliferate X times. (To proliferate, choose any number of permanents and/or players, then give each another counter of each kind already there.)
Expansion Algorithm
Fuel for the CauseCounter target spell, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Fuel for the Cause
Merfolk SkydiverFlying
When this creature enters, put a +1/+1 counter on target creature you control.
{3}{G}{U}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Merfolk Skydiver
Scheming AspirantWhenever you proliferate, each opponent loses 2 life and you gain 2 life.
Scheming Aspirant
Planewide CelebrationChoose 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.
Planewide Celebration
Viral DrakeFlying
Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
{3}{U}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Viral Drake
Tainted ObserverFlying
Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)
Whenever another creature you control enters, 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.)
Tainted Observer
Volt ChargeVolt 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.)
Volt Charge
Voidwing HybridFlying
Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)
When you proliferate, return this card from your graveyard to your hand.
Voidwing Hybrid
Brimaz, Blight of OreskosWhenever you cast a Phyrexian creature or artifact creature spell, incubate X, where X is that spell's mana value. (Create an Incubator token with X +1/+1 counters on it and "{2}: Transform this token." It transforms into a 0/0 Phyrexian artifact creature.)
At the beginning of each end step, if a Phyrexian died under your control this turn, proliferate.
Brimaz, Blight of Oreskos
Vivisurgeon's InsightDraw three cards. Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Vivisurgeon's Insight
Venomous BrutalizerToxic 3 (Players dealt combat damage by this creature also get three poison counters.)
When this creature enters, you may pay {1}{G}. If you do, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Venomous Brutalizer
Core ProwlerInfect (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.)
Core Prowler
Courage in CrisisPut 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.)
Courage in Crisis
Unbounded PotentialChoose one —
• Put a +1/+1 counter on each of up to two target creatures.
• Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Entwine {3}{W} (Choose both if you pay the entwine cost.)
Unbounded Potential
Guildpact InformantFlying
Whenever this creature deals combat damage to a player or planeswalker, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Guildpact Informant
Xavier Sal, Infested Captain{T}, Remove a counter from another permanent you control: Populate. Activate only as a sorcery. (Create a token that's a copy of a creature token you control.)
{T}, Sacrifice another creature: Proliferate. Activate only as a sorcery. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Xavier Sal, Infested Captain
Mesmerizing DoseEnchant creature
When this Aura enters, tap enchanted creature, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Enchanted creature doesn't untap during its controller's untap step.
Mesmerizing Dose
Brokers ConfluenceChoose three. You may choose the same mode more than once.
• Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
• Target creature phases out. (Treat it and anything attached to it as though they don't exist until its controller's next turn.)
• Counter target activated or triggered ability.
Brokers Confluence
Urban DaggertoothVigilance
Enrage — Whenever this creature is dealt damage, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Urban Daggertooth
Gulping ScraptrapWhen this creature enters or dies, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Gulping Scraptrap
Roalesk, Apex HybridFlying, 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.)
Roalesk, Apex Hybrid
Adaptive SporesingerVigilance
When this creature enters, choose one —
• Target creature gets +2/+2 and gains vigilance until end of turn.
• Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Adaptive Sporesinger
Copper LonglegsReach
{1}{G}, Sacrifice this creature: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Copper Longlegs
Park Heights MaverickDethrone (Whenever this creature attacks the player with the most life or tied for most life, put a +1/+1 counter on it.)
This creature can't be blocked by creatures with power 2 or less.
Whenever this creature deals combat damage to a player or dies, proliferate.
Park Heights Maverick
Cacophony ScampWhenever this creature deals combat damage to a player, you may sacrifice it. If you do, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
When this creature dies, it deals damage equal to its power to any target.
Cacophony Scamp
Spread the SicknessDestroy target creature, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Spread the Sickness
Proud Pack-RhinoWhen this creature enters, choose one —
• Put a shield counter on target permanent. (If it would be dealt damage or destroyed, remove a shield counter from it instead.)
• Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Proud Pack-Rhino
Venser, Corpse PuppetLifelink, 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.
Venser, Corpse Puppet
Wanderer's StrikeExile target creature, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Wanderer's Strike
Contagious VorracWhen this creature enters, look at the top four cards of your library. You may reveal a land card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. If you didn't put a card into your hand this way, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Contagious Vorrac
Bloom HulkWhen this creature enters, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Bloom Hulk
Plaguemaw Beast{T}, Sacrifice a creature: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Plaguemaw Beast
Martyr for the CauseWhen this creature dies, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Martyr for the Cause
Gitaxian AnatomistWhen this creature enters, you may tap it. If you do, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Gitaxian Anatomist
Huatli's RaptorVigilance
When this creature enters, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Huatli's Raptor
Kiora's DambreakerWhen this creature enters, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Kiora's Dambreaker
Tam, the PossibilityPlaneswalker spells you cast cost {1} less to cast.
{W}{U}{B}{R}{G}, {T}: Proliferate X times, where X is the number of planeswalker types among planeswalkers you control. (To proliferate, choose any number of permanents and/or players, then give each another counter of each kind already there.)
Tam, the Possibility
Carnival Elephant Meteor{TK}{TK} — Sacrifice this permanent: Draw two cards.
{TK}{TK}{TK} — Whenever this creature attacks, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
{TK}{TK} — 4/1
{TK}{TK}{TK}{TK}{TK} — 8/7
Carnival Elephant Meteor
Everythingamajig{2}, {T}: Move a counter from one permanent onto another. If the second permanent refers to any kind of counter, the moved counter becomes one of those counters. Otherwise, it becomes a +1/+1 counter.
{3}, {T}: 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.)
Everythingamajig
War of the Spark(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I — Each player may put a planeswalker or Zombie card from War of the Spark from their hand or graveyard onto the battlefield.
II — Sacrifice any number of creatures and/or planeswalkers. Each opponent sacrifices that many creatures and/or planeswalkers.
III — Exile up to one target Bolas. Proliferate three times.