You may spend mana as though it were mana of any color to activate abilities of creatures you control.
Creatures you control with +1/+1 counters on them have all activated abilities of all creature cards exiled with Agatha's Soul Cauldron.
{T}: Exile target card from a graveyard. When a creature card is exiled this way, put a +1/+1 counter on target creature you control.
{2}{U}{U}
Alandra, Sky Dreamer
Legendary Creature - Merfolk Wizard
Whenever you draw your second card each turn, create a 2/2 blue Drake creature token with flying.
Whenever you draw your fifth card each turn, Alandra, Sky Dreamer and Drakes you control each get +X/+X until end of turn, where X is the number of cards in your hand.
2 /
4
{1}
Animation Module
Artifact
Whenever one or more +1/+1 counters are put on a permanent you control, you may pay {1}. If you do, create a 1/1 colorless Servo artifact creature token.
{3}, {T}: Choose a counter on target permanent or player. Give that permanent or player another counter of that kind.
{3}{U}{U}{U}
Arcanis the Omnipotent
Legendary Creature - Wizard
{T}: Draw three cards.
{2}{U}{U}: Return Arcanis the Omnipotent to its owner's hand.
3 /
4
{3}{B}{B}
Archfiend of Ifnir
Creature - Demon
Flying
Whenever you cycle or discard another card, put a -1/-1 counter on each creature your opponents control.
Cycling {2} ({2}, Discard this card: Draw a card.)
5 /
4
{3}{U}
Arcum Dagsson
Legendary Creature - Human Artificer
{T}: Target artifact creature's controller sacrifices it. That player may search their library for a noncreature artifact card, put it onto the battlefield, then shuffle.
2 /
2
{2}{U}{U}{U}
Azami, Lady of Scrolls
Legendary Creature - Human Wizard
Tap an untapped Wizard you control: Draw a card.
0 /
2
{3}{U}{U}
Beguiler of Wills
Creature - Human Wizard
{T}: Gain control of target creature with power less than or equal to the number of creatures you control.
1 /
1
{1}{B}{B}
Big Game Hunter
Creature - Human Rebel Assassin
When Big Game Hunter enters the battlefield, destroy target creature with power 4 or greater. It can't be regenerated.
Madness {B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
1 /
1
{2}{B}{B}
Biotransference
Enchantment
Creatures you control are artifacts in addition to their other types. The same is true for creature spells you control and creature cards you own that aren't on the battlefield.
Whenever you cast an artifact spell, you lose 1 life and create a 2/2 black Necron Warrior artifact creature token.
{4}{B}
Bone Miser
Creature - Zombie Wizard
Whenever you discard a creature card, create a 2/2 black Zombie creature token.
Whenever you discard a land card, add {B}{B}.
Whenever you discard a noncreature, nonland card, draw a card.
4 /
4
{1}{B}
Cabal Ritual
Instant
Add {B}{B}{B}.
Threshold -- Add {B}{B}{B}{B}{B} instead if seven or more cards are in your graveyard.
{2}{U}
Chasm Skulker
Creature - Squid Horror
Whenever you draw a card, put a +1/+1 counter on Chasm Skulker.
When Chasm Skulker dies, create X 1/1 blue Squid creature tokens with islandwalk, where X is the number of +1/+1 counters on Chasm Skulker. (They can't be blocked as long as defending player controls an Island.)
1 /
1
{2}{U}
Chrome Host Seedshark
Creature - Phyrexian Shark
Flying
Whenever you cast a noncreature 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 artifact." It transforms into a 0/0 Phyrexian artifact creature.)
2 /
4
{2}{U}
Circular Logic
Instant
Counter target spell unless its controller pays {1} for each card in your graveyard.
Madness {U} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
{2}
Containment Construct
Artifact Creature - Construct
Whenever you discard a card, you may exile that card from your graveyard. If you do, you may play that card this turn.
2 /
1
{1}
Currency Converter
Artifact
Whenever you discard a card, you may exile that card from your graveyard.
{2}, {T}: Draw a card, then discard a card.
{T}: Put a card exiled with Currency Converter into your graveyard. If it's a land card, create a Treasure token. If it's a nonland card, create a 2/2 black Rogue creature token.
{U}
Cursecatcher
Creature - Merfolk Wizard
Sacrifice Cursecatcher: Counter target instant or sorcery spell unless its controller pays {1}.
Madness {B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
{4}{B}{B}
Dark Withering
Instant
Destroy target nonblack creature.
Madness {B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
{4}{U}
Deekah, Fractal Theorist
Legendary Creature - Human Wizard
Magecraft -- Whenever you cast or copy an instant or sorcery spell, create a 0/0 green and blue Fractal creature token. Put X +1/+1 counters on it, where X is that spell's mana value.
{3}{U}: Target creature token can't be blocked this turn.
3 /
3
{3}{U}
Deep Analysis
Sorcery
Target player draws two cards.
Flashback--{1}{U}, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)
{B}
Disciple of the Vault
Creature - Human Cleric
Whenever an artifact is put into a graveyard from the battlefield, you may have target opponent lose 1 life.
1 /
1
{2}{U}
Drake Haven
Enchantment
Whenever you cycle or discard a card, you may pay {1}. If you do, create a 2/2 blue Drake creature token with flying.
{1}{B}
Dreadhorde Invasion
Enchantment
At the beginning of your upkeep, you lose 1 life and amass Zombies 1. (Put a +1/+1 counter on an Army you control. It's also a Zombie. If you don't control an Army, create a 0/0 black Zombie Army creature token first.)
Whenever a Zombie token you control with power 6 or greater attacks, it gains lifelink until end of turn.
{4}{U}{U}
Echo of Eons
Sorcery
Each player shuffles their hand and graveyard into their library, then draws seven cards.
Flashback {2}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
{3}{U}
Encroaching Mycosynth
Artifact
Nonland permanents you control are artifacts in addition to their other types. The same is true for permanent spells you control and nonland permanent cards you own that aren't on the battlefield.
{2}{B}
Faith of the Devoted
Enchantment
Whenever you cycle or discard a card, you may pay {1}. If you do, each opponent loses 2 life and you gain 2 life.
{3}{B}
Gixian Puppeteer
Creature - Phyrexian Warlock
Whenever you draw your second card each turn, each opponent loses 2 life and you gain 2 life.
When Gixian Puppeteer dies, return another target creature card with mana value 3 or less from your graveyard to the battlefield.
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.)
2 /
2
{X}{X}
Hangarback Walker
Artifact Creature - Construct
Hangarback Walker enters the battlefield with X +1/+1 counters on it.
When Hangarback Walker dies, create a 1/1 colorless Thopter artifact creature token with flying for each +1/+1 counter on Hangarback Walker.
{1}, {T}: Put a +1/+1 counter on Hangarback Walker.
0 /
0
{B}
Ichor Drinker
Creature - Phyrexian Vampire
Lifelink
{B}, Exile Ichor Drinker from your graveyard: Incubate 2. Activate only as a sorcery. (Create an Incubator token with two +1/+1 counters on it and "{2}: Transform this artifact." It transforms into a 0/0 Phyrexian artifact creature.)
1 /
1
{1}{U}
Imposter Mech
Artifact - Vehicle
You may have Imposter Mech enter the battlefield as a copy of a creature an opponent controls, except it's a Vehicle artifact with crew 3 and it loses all other card types.
Crew 3
3 /
1
{4}{B/P}{B/P}{B/P}
K'rrik, Son of Yawgmoth
Legendary Creature - Phyrexian Horror Minion
({B/P} can be paid with either {B} or 2 life.)
Lifelink
For each {B} in a cost, you may pay 2 life rather than pay that mana.
Whenever you cast a black spell, put a +1/+1 counter on K'rrik, Son of Yawgmoth.
2 /
2
{5}
Karn, Legacy Reforged
Legendary Artifact Creature - Golem
Karn, Legacy Reforged's power and toughness are each equal to the greatest mana value among artifacts you control.
At the beginning of your upkeep, add {C} for each artifact you control. This mana can't be spent to cast nonartifact spells. Until end of turn, you don't lose this mana as steps and phases end.
* /
*
{U}{B}
Lazotep Chancellor
Creature - Zombie Wizard
Whenever you discard a card, you may pay {1}. If you do, amass 2. (Put two +1/+1 counters on an Army you control. If you don't control one, create a 0/0 black Zombie Army creature token first.)
1 /
3
{2}
Leaden Myr
Artifact Creature - Myr
{T}: Add {B}.
1 /
1
{U}{B}
Likeness Looter
Creature - Faerie Shapeshifter
Flying
{T}: Draw a card, then discard a card.
{X}: Likeness Looter becomes a copy of target creature card in your graveyard with mana value X, except it has flying and this ability. Activate only as a sorcery.
1 /
1
{4}
Maskwood Nexus
Artifact
Creatures you control are every creature type. The same is true for creature spells you control and creature cards you own that aren't on the battlefield.
{3}, {T}: Create a 2/2 blue Shapeshifter creature token with changeling. (It is every creature type.)
{7}
Memnarch
Legendary Artifact Creature - Wizard
{1}{U}{U}: Target permanent becomes an artifact in addition to its other types. (This effect lasts indefinitely.)
{3}{U}: Gain control of target artifact. (This effect lasts indefinitely.)
4 /
5
{1}{U}
Merfolk Looter
Creature - Merfolk Rogue
{T}: Draw a card, then discard a card.
1 /
1
{2}
Metallic Mimic
Artifact Creature - Shapeshifter
As Metallic Mimic enters the battlefield, choose a creature type.
Metallic Mimic is the chosen type in addition to its other types.
Each other creature you control of the chosen type enters the battlefield with an additional +1/+1 counter on it.
2 /
1
{2}
Millikin
Artifact Creature - Construct
{T}, Mill a card: Add {C}. (To mill a card, put the top card of your library into your graveyard.)
0 /
1
{3}{B}
Mirkwood Bats
Creature - Bat
Flying
Whenever you create or sacrifice a token, each opponent loses 1 life.
2 /
3
{U}{U}
Muddle the Mixture
Instant
Counter target instant or sorcery spell.
Transmute {1}{U}{U} ({1}{U}{U}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)
{2}{B}
Nadier's Nightblade
Creature - Elf Warrior
Whenever a token you control leaves the battlefield, each opponent loses 1 life and you gain 1 life.
1 /
3
{1}{U}{U}
Nadir Kraken
Creature - Kraken
Whenever you draw a card, you may pay {1}. If you do, put a +1/+1 counter on Nadir Kraken and create a 1/1 blue Tentacle creature token.
2 /
3
{2}{B}{B}
Necrotic Ooze
Creature - Ooze
As long as Necrotic Ooze is on the battlefield, it has all activated abilities of all creature cards in all graveyards.
4 /
3
{U}
Obsessive Search
Instant
Draw a card.
Madness {U} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
{2}
Ornithopter of Paradise
Artifact Creature - Thopter
Flying
{T}: Add one mana of any color.
0 /
2
{3}
Palladium Myr
Artifact Creature - Myr
{T}: Add {C}{C}.
2 /
2
{1}{B}{B}
Psychotic Episode
Sorcery
Target player reveals their hand and the top card of their library. You choose a card revealed this way. That player puts the chosen card on the bottom of their library.
Madness {1}{B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
{1}{U}
Rona, Herald of Invasion
Legendary Creature - Human Wizard
Whenever you cast a legendary spell, untap Rona, Herald of Invasion.
{T}: Draw a card, then discard a card.
{5}{B/P}: Transform Rona. Activate only as a sorcery. ({B/P} can be paid with either {B} or 2 life.)
1 /
3
--
Rona, Tolarian Obliterator
Legendary Creature - Phyrexian Wizard
Trample
Whenever a source deals damage to Rona, Tolarian Obliterator, that source's controller exiles a card from their hand at random. If it's a land card, you may put it onto the battlefield under your control. Otherwise, you may cast it without paying its mana cost.
1 /
3
{2}{U}
Sai, Master Thopterist
Legendary Creature - Human Artificer
Whenever you cast an artifact spell, create a 1/1 colorless Thopter artifact creature token with flying.
{1}{U}, Sacrifice two artifacts: Draw a card.
1 /
4
{2}{B}
Sedgemoor Witch
Creature - Human Warlock
Menace
Ward--Pay 3 life. (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays 3 life.)
Magecraft -- Whenever you cast or copy an instant or sorcery spell, create a 1/1 black and green Pest creature token with "When this creature dies, you gain 1 life."
3 /
2
{2}
Silver Myr
Artifact Creature - Myr
{T}: Add {U}.
1 /
1
{2}
Spellskite
Artifact Creature - Phyrexian Horror
{U/P}: Change a target of target spell or ability to Spellskite. ({U/P} can be paid with either {U} or 2 life.)
0 /
4
{2}{U}{U}
Teferi's Ageless Insight
Legendary Enchantment
If you would draw a card except the first one you draw in each of your draw steps, draw two cards instead.
{1}
The Ozolith
Legendary Artifact
Whenever a creature you control leaves the battlefield, if it had counters on it, put those counters on The Ozolith.
At the beginning of combat on your turn, if The Ozolith has counters on it, you may move all counters from The Ozolith onto target creature.
{1}{B}
The Raven Man
Legendary Creature - Human Wizard
At the beginning of each end step, if a player discarded a card this turn, create a 1/1 black Bird creature token with flying and "This creature can't block."
{3}{B}, {T}: Each opponent discards a card. Activate only as a sorcery.
2 /
1
{1}{U}
Thought Courier
Creature - Human Wizard
{T}: Draw a card, then discard a card.
1 /
1
{3}{U}
Toothy, Imaginary Friend
Legendary Creature - Illusion
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 /
1
{1}{U}{U}
Unctus, Grand Metatect
Legendary Artifact Creature - Phyrexian Vedalken
Other blue creatures you control have "Whenever this creature becomes tapped, draw a card, then discard a card."
Other artifact creatures you control get +1/+1.
{U/P}: Until end of turn, target creature you control becomes a blue artifact in addition to its other colors and types. Activate only as a sorcery. ({U/P} can be paid with either {U} or 2 life.)
2 /
4
{B}
Unearth
Sorcery
Return target creature card with mana value 3 or less from your graveyard to the battlefield.
Cycling {2} ({2}, Discard this card: Draw a card.)
{4}
Unwinding Clock
Artifact
Untap all artifacts you control during each other player's untap step.
{2}{U}{U}
Urza, Lord High Artificer
Legendary Creature - Human Artificer
When Urza, Lord High Artificer enters the battlefield, create a 0/0 colorless Construct artifact creature token with "This creature gets +1/+1 for each artifact you control."
Tap an untapped artifact you control: Add {U}.
{5}: Shuffle your library, then exile the top card. Until end of turn, you may play that card without paying its mana cost.
1 /
4
{U}{B}
Vohar, Vodalian Desecrator
Legendary Creature - Phyrexian Merfolk Wizard
{T}: Draw a card, then discard a card. If you discarded an instant or sorcery card this way, each opponent loses 1 life and you gain 1 life.
{2}, Sacrifice Vohar, Vodalian Desecrator: You may cast target instant or sorcery card from your graveyard this turn. If that spell would be put into your graveyard, exile it instead. Activate only as a sorcery.
1 /
2
{X}{X}
Walking Ballista
Artifact Creature - Construct
Walking Ballista enters the battlefield with X +1/+1 counters on it.
{4}: Put a +1/+1 counter on Walking Ballista.
Remove a +1/+1 counter from Walking Ballista: It deals 1 damage to any target.
0 /
0
{B}
Feign Death
Instant
Until end of turn, target creature gains "When this creature dies, return it to the battlefield tapped under its owner's control with a +1/+1 counter on it."
{1}
Iron Apprentice
Artifact Creature - Construct
Iron Apprentice enters the battlefield with a +1/+1 counter on it.
When Iron Apprentice dies, if it had counters on it, put those counters on target creature you control.
0 /
0
{5}{U}{U}
Murktide Regent
Creature - Dragon
Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)
Flying
Murktide Regent enters the battlefield with a +1/+1 counter on it for each instant and sorcery card exiled with it.
Whenever an instant or sorcery card leaves your graveyard, put a +1/+1 counter on Murktide Regent.
3 /
3
{2}{B}{B}
Phyrexian Scriptures
Enchantment - Saga
(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I -- Put a +1/+1 counter on up to one target creature. That creature becomes an artifact in addition to its other types.
II -- Destroy all nonartifact creatures.
III -- Exile all opponents' graveyards.
{1}{U}
Planar Incision
Instant
Exile target artifact or creature, then return it to the battlefield under its owner's control with a +1/+1 counter on it.
{1}{U}
Proft's Eidetic Memory
Legendary Enchantment
When Proft's Eidetic Memory enters the battlefield, draw a card.
You have no maximum hand size.
At the beginning of combat on your turn, if you've drawn more than one card this turn, put X +1/+1 counters on target creature you control, where X is the number of cards you've drawn this turn minus one.
--
Ruins of Oran-Rief
Land
Ruins of Oran-Rief enters the battlefield tapped.
{T}: Add {C}. ({C} represents colorless mana.)
{T}: Put a +1/+1 counter on target colorless creature that entered the battlefield this turn.
{5}{B}{B}
Shauku, Endbringer
Legendary Creature - Vampire
Flying
Shauku, Endbringer can't attack if there's another creature on the battlefield.
At the beginning of your upkeep, you lose 3 life.
{T}: Exile target creature and put a +1/+1 counter on Shauku.
5 /
5
{U}
Slip Out the Back
Instant
Put a +1/+1 counter on target creature. It phases out. (Treat it and anything attached to it as though they don't exist until its controller's next turn.)
{2}
Steel Overseer
Artifact Creature - Construct
{T}: Put a +1/+1 counter on each artifact creature you control.
1 /
1
{1}{U}
Teferi's Time Twist
Instant
Exile target permanent you control. Return that card to the battlefield under its owner's control at the beginning of the next end step. If it enters the battlefield as a creature, it enters with an additional +1/+1 counter on it.
{3}{U}{U}
Teferi, Temporal Pilgrim
Legendary Planeswalker - Teferi
Whenever you draw a card, put a loyalty counter on Teferi, Temporal Pilgrim.
0: Draw a card.
-2: Create a 2/2 blue Spirit creature token with vigilance and "Whenever you draw a card, put a +1/+1 counter on this creature."
-12: Target opponent chooses a permanent they control and returns it to its owner's hand. Then they shuffle each nonland permanent they control into its owner's library.
L:
4
{6}
Triskelion
Artifact Creature - Construct
Triskelion enters the battlefield with three +1/+1 counters on it.
Remove a +1/+1 counter from Triskelion: It deals 1 damage to any target.
1 /
1
{B}
Undying Malice
Instant
Until end of turn, target creature gains "When this creature dies, return it to the battlefield tapped under its owner's control with a +1/+1 counter on it."
{3}{U}
Unity of Purpose
Instant
Support 2. (Put a +1/+1 counter on each of up to two target creatures.)
Untap each creature you control with a +1/+1 counter on it.
{2}{U}
Vigean Graftmage
Creature - Vedalken Wizard Mutant
Graft 2 (This creature enters the battlefield with two +1/+1 counters on it. Whenever another creature enters the battlefield, you may move a +1/+1 counter from this creature onto it.)
{1}{U}: Untap target creature with a +1/+1 counter on it.