Prolific

Whenever a permanent you control is put into a graveyard, you get {E} (an energy counter).

{T}, Pay {E}{E}{E}{E}{E}{E}: Look at the top six cards of your library. You may cast a spell from among them without paying its mana cost. Put the rest on the bottom of your library in a random order.

[+1]: Until end of turn, up to one target creature gets +1/+1 and gains first strike, vigilance, and lifelink.

[−2]: Put a +1/+1 counter on each creature you control and a loyalty counter on each other planeswalker you control.

[−7]: You get an emblem with "If a source would deal damage to you or a planeswalker you control, prevent all but 1 of that damage."

[+2]: Reveal the top three cards of your library. Put all nonland permanent cards revealed this way into your hand and the rest on the bottom of your library in any order.

[−2]: Exile target creature. Its controller gains life equal to its power.

[−9]: Put five +1/+1 counters on each creature you control and five loyalty counters on each other planeswalker you control.

Creatures you control have vigilance.

[+1]: You gain 3 life.

[−2]: Put a +1/+1 counter on each creature you control and a loyalty counter on each other planeswalker you control.

At the beginning of each end step, if you drew two or more cards this turn, you may put a quest counter on Archmage Ascension.

As long as Archmage Ascension has six or more quest counters on it, if you would draw a card, you may instead search your library for a card, put that card into your hand, then shuffle your library.

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.)

Choose two —

• Destroy all artifacts.

• Destroy all enchantments.

• Destroy all creatures with converted mana cost 3 or less.

• Destroy all creatures with converted mana cost 4 or greater.

Bottomless Vault enters the battlefield tapped.

You may choose not to untap Bottomless Vault during your untap step.

At the beginning of your upkeep, if Bottomless Vault is tapped, put a storage counter on it.

{T}, Remove any number of storage counters from Bottomless Vault: Add {B} for each storage counter removed this way.

{T}: Add {C}.

{1}, {T}: Put a storage counter on Calciform Pools.

{1}, Remove X storage counters from Calciform Pools: Add X mana in any combination of {W} and/or {U}.

Lands you control have "{T}: Add one mana of any color."

{T}: Add one mana of any color.

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.)

When Contagion Engine enters the battlefield, put a -1/-1 counter on each creature target player controls.

{4}, {T}: 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.)

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

Draw a card.

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

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.)

Converge — Crystalline Crawler enters the battlefield with a +1/+1 counter on it for each color of mana spent to cast it.

Remove a +1/+1 counter from Crystalline Crawler: Add one mana of any color.

{T}: Put a +1/+1 counter on Crystalline Crawler.

Destroy all creatures.

When Deepglow Skate enters the battlefield, double the number of each kind of counter on any number of target permanents.

{T}: Add {C}.

{1}, {T}: Put a storage counter on Dreadship Reef.

{1}, Remove X storage counters from Dreadship Reef: Add X mana in any combination of {U} and/or {B}.

[+1]: Create a 1/1 white Soldier creature token.

[+1]: Target creature gets +3/+3 and gains flying until end of turn.

[−8]: You get an emblem with "Artifacts, creatures, enchantments, and lands you control have indestructible."

[+1]: Create three 1/1 white Soldier creature tokens.

[−3]: Destroy all creatures with power 4 or greater.

[−7]: You get an emblem with "Creatures you control get +2/+2 and have flying."

Empowered Autogenerator enters the battlefield tapped.

{T}: Put a charge counter on Empowered Autogenerator. Add X mana of any one color, where X is the number of charge counters on Empowered Autogenerator.

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.

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.)

Evolve (Whenever a creature enters the battlefield under your control, 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 Fathom Mage, you may draw a card.

Fertilid enters the battlefield with two +1/+1 counters on it.

{1}{G}, Remove a +1/+1 counter from Fertilid: Target player searches their library for a basic land card, puts it onto the battlefield tapped, then shuffles their library.

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.)

({T}: Add {G}.)

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.

Fountain of Cho enters the battlefield tapped.

{T}: Put a storage counter on Fountain of Cho.

{T}, Remove any number of storage counters from Fountain of Cho: Add {W} for each storage counter removed this way.

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

[0]: Create two 2/2 black and green Wolf creature tokens with "When this creature dies, put a loyalty counter on each Garruk you control."

[−3]: Destroy target creature. Draw a card.

[−6]: You get an emblem with "Creatures you control get +3/+3 and have trample."

Flying

Whenever Grateful Apparition 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.)

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.)

Flying

Whenever Guildpact Informant 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.)

Hollow Trees enters the battlefield tapped.

You may choose not to untap Hollow Trees during your untap step.

At the beginning of your upkeep, if Hollow Trees is tapped, put a storage counter on it.

{T}, Remove any number of storage counters from Hollow Trees: Add {G} for each storage counter removed this way.

Vigilance

When Huatli's Raptor enters the battlefield, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Icatian Store enters the battlefield tapped.

You may choose not to untap Icatian Store during your untap step.

At the beginning of your upkeep, if Icatian Store is tapped, put a storage counter on it.

{T}, Remove any number of storage counters from Icatian Store: Add {W} for each storage counter removed this way.

{T}: Add one mana of any type that a land you control could produce. If Incubation Druid has a +1/+1 counter on it, add three mana of that type instead.

{3}{G}{G}: Adapt 3. (If this creature has no +1/+1 counters on it, put three +1/+1 counters 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.)

({T}: Add {U}.)

Each creature you control with a +1/+1 counter on it has "{T}: Add one mana of any color."

[−1]: Put a +1/+1 counter on target creature.

{T}: Add {C}.

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

[+1]: Until your next turn, prevent all damage that would be dealt to and dealt by target permanent an opponent controls.

[−1]: Draw a card. You may play an additional land this turn.

[−5]: You get an emblem with "At the beginning of your end step, create a 9/9 blue Kraken creature token."

{T}: Put a charge counter on Lux Cannon.

{T}, Remove three charge counters from Lux Cannon: Destroy target permanent.

When Martyr for the Cause dies, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

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.

Flying

When Merfolk Skydiver enters the battlefield, 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.)

At the beginning of your upkeep, put a lore counter on Mind Unbound, then draw a card for each lore counter on Mind Unbound.

[+1]: Untap target land you control. Until your next turn, it becomes a 5/5 Elemental creature with haste. It's still a land.

[−3]: Return target permanent card from your graveyard to your hand.

[−6]: You get an emblem with "Whenever a land enters the battlefield under your control, you may draw a card."

When Oath of Ajani enters the battlefield, put a +1/+1 counter on each creature you control.

Planeswalker spells you cast cost {1} less to cast.

When Oath of Teferi enters the battlefield, exile another target permanent you control. Return it to the battlefield under its owner's control at the beginning of the next end step.

You may activate the loyalty abilities of planeswalkers you control twice each turn rather than only once.

{T}: Add {C}.

{1}, {T}: Add one mana of any color in your commander's color identity. If you spend this mana to cast your commander, it enters the battlefield with a number of additional +1/+1 counters on it equal to the number of times it's been cast from the command zone this game.

Partner with Toothy, Imaginary Friend (When this creature enters the battlefield, target player may put Toothy into their hand from their library, then shuffle.)

If one or more counters would be put on a permanent your team controls, that many plus one of each of those kinds of counters are put on that permanent instead.

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

({T}: Add {W}.)

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.

Graft 3 (This creature enters the battlefield with three +1/+1 counters on it. Whenever another creature enters the battlefield, you may move a +1/+1 counter from this creature onto it.)

{2}: Target creature with a +1/+1 counter on it gains shroud until end of turn. (It can't be the target of spells or abilities.)

When Pollenbright Druid enters the battlefield, 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.)

Primordial Hydra enters the battlefield with X +1/+1 counters on it.

At the beginning of your upkeep, double the number of +1/+1 counters on Primordial Hydra.

Primordial Hydra has trample as long as it has ten or more +1/+1 counters on it.

You have no maximum hand size.

{T}: Add {C}.

Reyhan, Last of the Abzan enters the battlefield with three +1/+1 counters on it.

Whenever a creature you control dies or is put into the command zone, if it had one or more +1/+1 counters on it, you may put that many +1/+1 counters on target creature.

Partner (You can have two commanders if both have partner.)

Flying, trample

When Roalesk, Apex Hybrid enters the battlefield, 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 cast Rout as though it had flash if you pay {2} more to cast it. (You may cast it any time you could cast an instant.)

Destroy all creatures. They can't be regenerated.

Rushwood Grove enters the battlefield tapped.

{T}: Put a storage counter on Rushwood Grove.

{T}, Remove any number of storage counters from Rushwood Grove: Add {G} for each storage counter removed this way.

{T}: Add {C}.

{1}, {T}: Put a storage counter on Saltcrusted Steppe.

{1}, Remove X storage counters from Saltcrusted Steppe: Add X mana in any combination of {G} and/or {W}.

Sand Silos enters the battlefield tapped.

You may choose not to untap Sand Silos during your untap step.

At the beginning of your upkeep, if Sand Silos is tapped, put a storage counter on it.

{T}, Remove any number of storage counters from Sand Silos: Add {U} for each storage counter removed this way.

Saprazzan Cove enters the battlefield tapped.

{T}: Put a storage counter on Saprazzan Cove.

{T}, Remove any number of storage counters from Saprazzan Cove: Add {U} for each storage counter removed this way.

Whenever an opponent draws a card, that player may pay {2}. If the player doesn't, you create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

You may have Spark Double enter the battlefield 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 if that permanent is legendary.

Destroy target creature, then 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.

Reach, trample, protection from multicolored

Stonecoil Serpent enters the battlefield with X +1/+1 counters on it.

Subterranean Hangar enters the battlefield tapped.

{T}: Put a storage counter on Subterranean Hangar.

{T}, Remove any number of storage counters from Subterranean Hangar: Add {B} for each storage counter removed this way.

({T}: Add {B}.)

Equipped 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}

Spells and abilities your opponents control can't cause you to discard cards or sacrifice permanents.

[+1]: Choose a nonland card name, then reveal the top four cards of your library. Put all cards with the chosen name from among them into your hand and the rest into your graveyard.

[−3]: Return target card from your graveyard to your hand.

({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.)

This spell costs {1} less to cast for each instant and sorcery card in your graveyard.

You have no maximum hand size.

At the beginning of your upkeep, put a knowledge counter on The Magic Mirror, then draw a card for each knowledge counter on The Magic Mirror.

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.)

Partner with Pir, Imaginative Rascal (When this creature enters the battlefield, target player may put Pir into their hand from their library, then shuffle.)

Whenever you draw a card, put a +1/+1 counter on Toothy, Imaginary Friend.

When Toothy leaves the battlefield, draw a card for each +1/+1 counter on it.

[+1]: Until your next turn, whenever a creature deals combat damage to Vraska the Unseen, destroy that creature.

[−3]: Destroy target nonland permanent.

[−7]: Create three 1/1 black Assassin creature tokens with "Whenever this creature deals combat damage to a player, that player loses the game."

[+2]: Create a 2/2 black Pirate creature token with menace.

[−3]: Destroy target artifact, creature, or enchantment. Create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

[−10]: Target player's life total becomes 1.

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

If one or more counters would be put on an artifact or creature you control, that many plus one of each of those kinds of counters are put on that permanent instead.

If you would get one or more counters, you get that many plus one of each of those kinds of counters instead.