Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. (It can attack and {T} this turn.)

When Agent of Treachery enters the battlefield, gain control of target permanent.

At the beginning of your end step, if you control three or more permanents you don't own, draw three cards.

Cleave {4}{U}{U}{R} (You may cast this spell for its cleave cost. If you do, remove the words in square brackets.)

Take an extra turn after this one. During that turn, damage can't be prevented. [At the beginning of that turn's end step, you lose the game.]

Exile Alchemist's Gambit.

{T}: Add {C}{C}. Ancient Tomb deals 2 damage to you.

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

{T}, Sacrifice another creature or artifact: Ayara, Widow of the Realm deals X damage to target opponent or battle and you gain X life, where X is the sacrificed permanent's mana value.

{5}{R/P}: Transform Ayara. Activate only as a sorcery. ({R/P} can be paid with either {R} or 2 life.)

At the beginning of combat on your turn, return up to one target artifact or creature card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step.

Equipped creature has myriad. (Whenever it attacks, for each opponent other than defending player, you may create a token that's a copy of that creature that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.)

Equip {4}

({T}: Add {B} or {R}.)

As Blood Crypt enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

{T}: Add {C}.

{U/R}, {T}: Add {U}{U}, {U}{R}, or {R}{R}.

As Cavern of Souls 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, and that spell can't be countered.

Enchant land

Enchanted land has "{T}, Discard a card: Gain control of target creature until end of turn."

Gain control of target creature with mana value 3 or less until end of turn. Untap that creature. It gains haste until end of turn.

{T}: Add {U}.

{T}: Add {B}.

{T}: Add one mana of any color.

{T}: Put a charge counter on Coalition Relic.

At the beginning of your precombat main phase, remove all charge counters from Coalition Relic. Add one mana of any color for each charge counter removed this way.

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

Flying

Whenever an opponent draws a card, you may draw two cards.

Haste

{1}, {T}: Add {U}{B}{R}. Spend this mana only to cast instant and/or sorcery spells.

When Cormela, Glamour Thief dies, return up to one target instant or sorcery card from your graveyard to your hand.

Crumbling Necropolis enters the battlefield tapped.

{T}: Add {U}, {B}, or {R}.

When Crypt of the Eternals enters the battlefield, you gain 1 life.

{T}: Add {C}.

{1}, {T}: Add {U}, {B}, or {R}.

Return target nonland permanent you don't control to its owner's hand.

Overload {6}{U} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Menace

Myriad (Whenever this creature attacks, for each opponent other than defending player, you may create a token that's a copy of this creature that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.)

Shadow (This creature can block or be blocked by only creatures with shadow.)

If a card would be put into an opponent's graveyard from anywhere, instead exile it with a void counter on it.

{T}, Sacrifice Dauthi Voidwalker: Choose an exiled card an opponent owns with a void counter on it. You may play it this turn without paying its mana cost.

If you control a commander, you may cast this spell without paying its mana cost.

You may choose new targets for target spell or ability.

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

Enchant creature

Shroud (A permanent with shroud can't be the target of spells or abilities.)

Enchanted creature has shroud.

When Dockside Extortionist enters the battlefield, create X Treasure tokens, where X is the number of artifacts and enchantments your opponents control. (Treasure tokens are artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")

Dragonskull Summit enters the battlefield tapped unless you control a Swamp or a Mountain.

{T}: Add {B} or {R}.

Flash

When Dualcaster Mage enters the battlefield, copy target instant or sorcery spell. You may choose new targets for the copy.

{T}: Add one mana of any color that a land an opponent controls could produce.

Search your library for an artifact card, reveal it, put it into your hand, then shuffle.

If you control a commander, you may cast this spell without paying its mana cost.

Counter target noncreature spell.

Take an extra turn after this one. At the beginning of that turn's end step, you lose the game.

Enthralling Performance -- When Firbolg Flutist enters the battlefield, gain control of target creature you don't control until end of turn. Untap it. It gains haste and myriad until end of turn. (Whenever it attacks, for each opponent other than defending player, you may create a token that's a copy of that creature that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.)

If it's not your turn, you may exile a blue card from your hand rather than pay this spell's mana cost.

Counter target noncreature spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

Gain control of target creature until end of turn. Untap that creature. Until end of turn, it gains haste and "Whenever this creature deals combat damage to a player or battle, create a Treasure token." (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

{T}: Add {C}.

{B/R}, {T}: Add {B}{B}, {B}{R}, or {R}{R}.

Put target creature card from an opponent's graveyard onto the battlefield under your control. It gains haste. Exile it at the beginning of the next end step. If that creature would leave the battlefield, exile it instead of putting it anywhere else.

Strive -- This spell costs {2}{R} more to cast for each target beyond the first.

Gain control of any number of target creatures until end of turn. Untap those creatures. They gain haste until end of turn.

Choose up to two target creatures you don't control. For each of those creatures, create a token that's a copy of that creature. Those tokens gain haste. Exile them at the beginning of the next end step.

Create a token that's a copy of target creature, except it has haste and "At the beginning of the end step, exile this permanent."

Draw three cards. Discard three cards at the beginning of the next end step.

{R}: Inferno Titan gets +1/+0 until end of turn.

Whenever Inferno Titan enters the battlefield or attacks, it deals 3 damage divided as you choose among one, two, or three targets.

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

Imprint -- When Isochron Scepter enters the battlefield, you may exile an instant card with mana value 2 or less from your hand.

{2}, {T}: You may copy the exiled card. If you do, you may cast the copy without paying its mana cost.

{R}, {T}, Discard a card: Create a token that's a copy of another target creature you control. It gains haste and "When this creature dies, draw a card." Sacrifice it at the beginning of the next end step. Activate only as a sorcery.

Blitz {1}{R} (If you cast this spell for its blitz cost, it gains haste and "When this creature dies, draw a card." Sacrifice it at the beginning of the next end step.)

Choose one. If you control a commander as you cast this spell, you may choose both instead.

• Add {R} for each card in target opponent's hand.

• Exile the top three cards of your library. You may play them this turn.

Gain control of target creature or Vehicle until end of turn. Untap it. It gains haste until end of turn.

You may cast a spell with mana value 2 or less from your hand without paying its mana cost.

Flying

Creatures you control have "Whenever this creature becomes the target of a spell or ability for the first time each turn, counter that spell or ability."

Take an extra turn after this one. At the beginning of that turn's end step, you lose the game.

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.)

Equip {0}

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.

Look at the top five cards of your library. As many times as you choose, you may pay 1 life, put those cards on the bottom of your library in any order, then look at the top five cards of your library. Then shuffle and put the last cards you looked at this way on top in any order.

{T}, Pay 1 life: Add one mana of any color.

At the beginning of your upkeep, flip a coin. If you lose the flip, Mana Crypt deals 3 damage to you.

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

Imprint -- Whenever a nontoken creature dies, you may exile that card. If you do, return each other card exiled with Mimic Vat to its owner's graveyard.

{3}, {T}: Create a token that's a copy of a card exiled with Mimic Vat. It gains haste. Exile it at the beginning of the next end step.

{T}: Add {U}.

{U}, {T}: Untap target legendary permanent.

Choose one --

• Gain control of all creatures with power 4 or greater until end of turn. Untap those creatures. They gain haste until end of turn.

• Gain control of all creatures with power 3 or less until end of turn. Untap those creatures. They gain haste until end of turn.

Morphic Pool enters the battlefield tapped unless you have two or more opponents.

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

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

Blue spells and red spells you cast cost {1} less to cast.

{1}{B}: Regenerate Nightscape Familiar.

Flash

If an opponent would draw a card except the first one they draw in each of their draw steps, instead that player skips that draw and you draw a card.

{T}: The player whose turn it is may end the turn. (Exile all spells and abilities from the stack. The player whose turn it is discards down to their maximum hand size. Damage wears off, and "this turn" and "until end of turn" effects end.)

Choose one --

• Counter target spell if it's blue.

• Destroy target permanent if it's blue.

Put target creature card from a graveyard onto the battlefield under your control. You lose life equal to its mana value.

Choose one --

• Counter target blue spell.

• Destroy target blue permanent.

Destroy up to X target artifacts. If X is 5 or more, for each artifact destroyed this way, create a token that's a copy of it. Those tokens gain haste. Exile them at the beginning of the next end step.

Whenever an opponent casts a spell, you may draw a card unless that player pays {1}.

{T}: Add {U}.

{T}: Add {R}.

Return target creature to its owner's hand. Untap up to two lands.

{R}: You may put a creature card from your hand onto the battlefield. That creature gains haste. Sacrifice the creature at the beginning of the next end step.

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

({T}: Add {U} or {R}.)

As Steam Vents enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

{1}, {T}: End the turn. Activate only during your turn. (Exile all spells and abilities from the stack. Discard down to your maximum hand size. Damage wears off, and "this turn" and "until end of turn" effects end.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

{T}: Add {C}.

{T}: Add {U} or {R}. Talisman of Creativity deals 1 damage to you.

{T}: Add {C}.

{T}: Add {B} or {R}. Talisman of Indulgence deals 1 damage to you.

Myriad

The "legend rule" doesn't apply to creature tokens you control.

Triggered abilities you control can't cause you to sacrifice or exile creature tokens you control.

Counter target spell. Choose 1, 2, or 3 at random. Its controller mills that many cards, then exiles cards from the top of their library until they exile a nonland card with a different name than that spell. They may cast that card without paying its mana cost. Then they put the exiled cards on the bottom of their library in a random order.

As an additional cost to cast this spell, pay X life.

All creatures get -X/-X until end of turn.

At the beginning of each end step, put a slime counter on each creature you don't control.

Creatures you don't control get -1/-1 for each slime counter on them.

Whenever a creature you don't control with a slime counter on it dies, create a 1/1 black Slug creature token.

{U}{B}, Sacrifice a Slug: Draw a card.

Training Center enters the battlefield tapped unless you have two or more opponents.

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

Gain control of target creature until end of turn. Untap it. It gains trample and haste until end of turn.

Whenever an opponent taps an artifact for mana, gain control of that artifact until the end of your next turn.

Strive -- This spell costs {2}{R} more to cast for each target beyond the first.

Choose any number of target creatures you control. For each of them, create a token that's a copy of that creature, except it has haste. Exile those tokens at the beginning of the next end step.

Each nonland card in your graveyard has escape. The escape cost is equal to the card's mana cost plus exile three other cards from your graveyard. (You may cast cards from your graveyard for their escape cost.)

At the beginning of the end step, sacrifice Underworld Breach.

Search your library for a card, then shuffle and put that card on top. You lose 2 life.

Destroy target artifact you don't control.

Overload {4}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

{T}: Add {C}.

{1}{B}, {T}: Put target creature card from your graveyard on top of your library.

Take an extra turn after this one. At the beginning of that turn's end step, you lose the game.

({T}: Add {U}, {B}, or {R}.)

Xander's Lounge enters the battlefield tapped.

Cycling {3} ({3}, Discard this card: Draw a card.)