Return target creature to its owner's hand. You may have Shapeshifters you control become copies of that creature until end of turn.

Commander creatures you own have "The first Dragon spell you cast each turn costs {2} less to cast."

Aeon Chronicler's power and toughness are each equal to the number of cards in your hand.

Suspend X--{X}{3}{U}. X can't be 0.

Whenever a time counter is removed from Aeon Chronicler while it's exiled, draw a card.

Changeling (This card is every creature type.)

{T}: Target creature gains all creature types until end of turn.

{T}: Target creature loses all creature types until end of turn.

Oozes you control get +1/+1.

At the beginning of your upkeep, if you control a commander, create a token that's a copy of Biowaste Blob.

Changeling (This card is every creature type.)

As Bloodline Pretender enters the battlefield, choose a creature type.

Whenever another creature of the chosen type enters the battlefield under your control, put a +1/+1 counter on Bloodline Pretender.

Whenever you cast a Spirit or Arcane spell, you may put a ki counter on Callow Jushi.

At the beginning of the end step, if there are two or more ki counters on Callow Jushi, you may flip it.

Remove a ki counter from Jaraku the Interloper: Counter target spell unless its controller pays {2}.

{1}{G}, Sacrifice Caustic Caterpillar: Destroy target artifact or enchantment.

Changeling (This card is every creature type.)

Protection from black

{2}{G}{G}: Chameleon Colossus gets +X/+X until end of turn, where X is its power.

Changeling (This card is every creature type.)

Champion a creature (When this enters the battlefield, sacrifice it unless you exile another creature you control. When this leaves the battlefield, that card returns to the battlefield.)

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.)

You may have Clone enter the battlefield as a copy of any creature on the battlefield.

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

You have no maximum hand size.

{T}: Add one mana of any color.

Flying, trample

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Counter target activated or triggered ability from a noncreature source. (Then exile this card. You may cast the creature later from exile.)

Flying

Spells your opponents cast that target one or more commanders you control cost {3} more to cast.

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

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

Other Cats you control get +1/+1 and have protection from Dogs.

Whenever one or more Cats you control deal combat damage to a player, destroy up to one target artifact or enchantment that player controls.

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

Werewolf creatures you control get +1/+0 and have trample.

Sacrifice Full Moon's Rise: Regenerate all Werewolf creatures you control.

All Slivers have "{T}: Add one mana of any color."

Changeling (This card is every creature type.)

Whenever another creature named Gladewalker Ritualist enters the battlefield under your control, draw a card.

Changeling (This card is every creature type.)

When Guardian Gladewalker enters the battlefield, put a +1/+1 counter on target creature.

{T}: Add X mana of any one color, where X is the number of Allies you control.

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

{T}: Add {G}. When you spend this mana to cast a Dragon creature spell, it enters the battlefield with an additional +1/+1 counter on it and gains hexproof until your next turn. (It can't be the target of spells or abilities your opponents control.)

Discard a card: Return Jadzi, Oracle of Arcavios to its owner's hand.

Magecraft -- Whenever you cast or copy an instant or sorcery spell, reveal the top card of your library. If it's a nonland card, you may cast it by paying {1} rather than paying its mana cost. If it's a land card, put it onto the battlefield.

You may put any number of land cards from your hand onto the battlefield. Then if you control eight or more lands, you may discard a card. If you do, return Journey to the Oracle to its owner's hand.

{T}: Add {U}. When you spend this mana to cast a Dragon creature spell, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Changeling (This card is every creature type.)

{2}{G}, {T}, Exile a creature card from your graveyard: Put two +1/+1 counters on target creature. Activate only as a sorcery.

Changeling (This card is every creature type.)

When Littjara Kinseekers enters the battlefield, if you control three or more creatures that share a creature type, put a +1/+1 counter on Littjara Kinseekers, then scry 1.

Illusion creatures you control get +1/+1 and have hexproof. (They can't be the targets of spells or abilities your opponents control.)

Changeling (This card is every creature type.)

When Masked Vandal enters the battlefield, you may exile a creature card from your graveyard. If you do, exile target artifact or enchantment an opponent controls.

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.)

Masumaro, First to Live's power and toughness are each equal to twice the number of cards in your hand.

At the beginning of your end step, untap all Merfolk you control.

Other Merfolk creatures you control get +1/+1.

Whenever you cast a Merfolk spell, you may tap or untap target permanent.

Whenever you draw your second card each turn, create a 1/1 blue Illusion creature token with "This creature gets +1/+0 for each other Illusion you control."

Whenever an Illusion you control dies, you may put a permanent card with mana value less than or equal to that creature's power from your hand onto the battlefield.

You may have Mirror Image enter the battlefield as a copy of a creature you control.

Creature spells you cast that share a creature type with Mistform Warchief cost {1} less to cast.

{T}: Mistform Warchief becomes the creature type of your choice until end of turn.

Changeling (This card is every creature type.)

Flying

{1}{U}: Mistwalker gets +1/-1 until end of turn.

{1}{G}, {T}: You may put a creature card from your hand onto the battlefield.

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Mill five cards, then return a creature card milled this way to your hand. (Then exile this card. You may cast the artifact later from exile.)

+2: Draw two cards, then put a card from your hand on the bottom of your library.

-2: Create a blue Dog Illusion creature token with "This creature's power and toughness are each equal to twice the number of cards in your hand."

-10: Exchange your hand and library, then shuffle. You get an emblem with "You have no maximum hand size."

Changeling (This card is every creature type.)

You may have Moritte of the Frost enter the battlefield as a copy of a permanent you control, except it's legendary and snow in addition to its other types and, if it's a creature, it enters with two additional +1/+1 counters on it and has changeling.

Changeling (This card is every creature type.)

Tap an untapped creature you control: Mothdust Changeling gains flying until end of turn.

Equipped creature has lifelink if you control a Cleric, deathtouch if you control a Rogue, haste if you control a Warrior, and flying if you control a Wizard.

As long as you have a full party, prevent all damage that would be dealt to equipped creature.

Equip {2}

Myriad Landscape enters the battlefield tapped.

{T}: Add {C}.

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

Bigby's Hand -- {T}: Untap two other target permanents. Activate only as a sorcery and only once each turn.

At the beginning of each player's upkeep, return to its owner's hand each creature that player controls with power greater than the number of cards in their hand.

Overbeing of Myth's power and toughness are each equal to the number of cards in your hand.

At the beginning of your draw step, draw an additional card.

Choose a creature type. If you control more creatures of that type than each other player, you gain control of all creatures of that type. (This effect lasts indefinitely.)

You may have Progenitor Mimic enter the battlefield 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."

Psychosis Crawler's power and toughness are each equal to the number of cards in your hand.

Whenever you draw a card, each opponent loses 1 life.

Changeling (This card is every creature type.)

As Realmwalker enters the battlefield, choose a creature type.

You may look at the top card of your library any time.

You may cast creature spells of the chosen type from the top of your library.

When Reclamation Sage enters the battlefield, you may destroy target artifact or enchantment.

You have no maximum hand size.

{T}: Add {C}.

{T}: Add {C}.

{1}{U}, {T}: Return target Wizard you control to its owner's hand.

Whenever Risen Reef or another Elemental enters the battlefield under your control, look at the top card of your library. If it's a land card, you may put it onto the battlefield tapped. If you don't put the card onto the battlefield, put it into your hand.

Other Snake creatures you control get +0/+1.

Shamans you control have "{T}: Add {G}{G}."

Flying

Whenever Sapphire Dragon attacks or blocks, scry 2.

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Counter target noncreature spell. (Then exile this card. You may cast the creature later from exile.)

Reveal your hand: If you have seven or more land cards in your hand, flip Sasaya, Orochi Ascendant.

Whenever a land you control is tapped for mana, add an additional one mana of any type that land produced for each other land you control with the same name as it.

As Secluded Courtyard enters the battlefield, choose a creature type.

{T}: Add {C}.

{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type or activate an ability of a creature or creature card of the chosen type.

Changeling (This card is every creature type.)

{2}{U}: Target Shapeshifter becomes a copy of target creature until your next turn.

Simic Growth Chamber enters the battlefield tapped.

When Simic Growth Chamber enters the battlefield, return a land you control to its owner's hand.

{T}: Add {G}{U}.

You have no maximum hand size.

{U}{U}, {T}, Discard a card: Counter target noncreature spell.

Temple of Mystery enters the battlefield tapped.

When Temple of Mystery enters the battlefield, scry 1.

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

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

You have no maximum hand size.

{T}: Add {C}.

Tishana, Voice of Thunder's power and toughness are each equal to the number of cards in your hand.

You have no maximum hand size.

When Tishana enters the battlefield, draw a card for each creature you control.

You have no maximum hand size.

At the beginning of your upkeep, if you have exactly thirteen cards in your hand, you win the game.

{3}{U}: Draw a card.

Your maximum hand size is increased by two.

At the beginning of your upkeep, return a blue creature you control to its owner's hand.

As Unclaimed Territory enters the battlefield, choose a creature type.

{T}: Add {C}.

{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type.

Changeling (This card is every creature type.)

You have no maximum hand size.

At the beginning of your upkeep, you gain 1 life for each card in your hand.

{U}{U}, Sacrifice a Wizard: Counter target spell.

Morph {U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

When Volo enters the battlefield, create Volo's Journal, a legendary colorless artifact token with hexproof and "Whenever you cast a creature spell, note one of its creature types that hasn't been noted for this artifact."

{2}, {T}: Draw a card for each creature type noted for target permanent you control named Volo's Journal.

Choose a Background

Return all creatures to their owners' hands except for Krakens, Leviathans, Octopuses, and Serpents.

Changeling (This card is every creature type.)