You may have Clever Impersonator enter the battlefield as a copy of any nonland permanent on the battlefield.

When Court of Vantress enters the battlefield, you become the monarch. At the beginning of your upkeep, choose up to one other target enchantment or artifact. If you're the monarch, you may create a token that's a copy of it. If you're not the monarch, you may have Court of Vantress become a copy of it, except it has this ability.

{2}: Mirage Mirror becomes a copy of target artifact, creature, enchantment, or land until end of turn.

+2: Each player draws a card. −1: Target player draws a card. −10: Target player mills twenty cards.

{T}: Each player may draw a card, then each player who drew a card this way gains 1 life.

Whenever a player draws their second card during their turn, you draw a card. Whenever a player casts their second spell during their turn, you create a 2/2 white Knight creature token.

Defender When Akroan Horse enters the battlefield, an opponent gains control of it. At the beginning of your upkeep, each opponent creates a 1/1 white Soldier creature token.

When Banishing Light enters the battlefield, exile target nonland permanent an opponent controls until Banishing Light leaves the battlefield.

When Delusions of Mediocrity enters the battlefield, you gain 10 life. When Delusions of Mediocrity leaves the battlefield, you lose 10 life.

Flash At the beginning of each player's draw step, that player draws an additional card.

Nonland permanents don't untap during their controllers' untap steps. At the beginning of your upkeep, you lose 2 life.

When Grasp of Fate enters the battlefield, for each opponent, exile up to one target nonland permanent that player controls until Grasp of Fate leaves the battlefield. (Those permanents return under their owners' control.)

At the beginning of each player's draw step, if Howling Mine is untapped, that player draws an additional card.

At the beginning of your end step, target opponent gains control of Jinxed Choker and puts a charge counter on it. At the beginning of your upkeep, Jinxed Choker deals damage to you equal to the number of charge counters on it. {3}: Put a charge counter on Jinxed Choker or remove one from it.

At the beginning of your upkeep, Jinxed Idol deals 2 damage to you. Sacrifice a creature: Target opponent gains control of Jinxed Idol.

Whenever a nontoken permanent is put into your graveyard from the battlefield, Jinxed Ring deals 1 damage to you. Sacrifice a creature: Target opponent gains control of Jinxed Ring. (This effect lasts indefinitely.)

At the beginning of each player's draw step, that player draws an additional card.

When Oblivion Ring enters the battlefield, exile another target nonland permanent. When Oblivion Ring leaves the battlefield, return the exiled card to the battlefield under its owner's control.

At the beginning of each player's upkeep, Roiling Vortex deals 1 damage to them. Whenever a player casts a spell, if no mana was spent to cast that spell, Roiling Vortex deals 5 damage to that player. {R}: Your opponents can't gain life this turn.

{T}, Pay 1 life, Sacrifice Arid Mesa: Search your library for a Mountain or Plains card, put it onto the battlefield, then shuffle.

Clifftop Retreat enters the battlefield tapped unless you control a Mountain or a Plains. {T}: Add {R} or {W}.

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

({T}: Add {R} or {W}.) Elegant Parlor enters the battlefield tapped. When Elegant Parlor enters the battlefield, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

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

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

{T}, Sacrifice Fabled Passage: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle. Then if you control four or more lands, untap that land.

{T}, Pay 1 life, Sacrifice Flooded Strand: Search your library for a Plains or Island card, put it onto the battlefield, then shuffle.

Glacial Fortress enters the battlefield tapped unless you control a Plains or an Island. {T}: Add {W} or {U}.

({T}: Add {W} or {U}.) As Hallowed Fountain enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

({T}: Add {U}.)

{T}: Add {C}. {1}{R}, {T}: Create a 0/1 red Kobold creature token named Kobolds of Kher Keep.

{T}: Add {C}. {4}, {T}: Remove target attacking or blocking creature from combat.

({T}: Add {W} or {U}.) Meticulous Archive enters the battlefield tapped. When Meticulous Archive enters the battlefield, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

({T}: Add {R}.)

Mystic Monastery enters the battlefield tapped. {T}: Add {U}, {R}, or {W}.

({T}: Add {W}.)

({T}: Add {U}, {R}, or {W}.) Raugrin Triome enters the battlefield tapped. Cycling {3} ({3}, Discard this card: Draw a card.)

You have no maximum hand size. {T}: Add {C}.

({T}: Add {R} or {W}.) As Sacred Foundry enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

{T}, Pay 1 life, Sacrifice Scalding Tarn: Search your library for an Island or Mountain card, put it onto the battlefield, then shuffle.

({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.

Sulfur Falls enters the battlefield tapped unless you control an Island or a Mountain. {T}: Add {U} or {R}.

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

Creatures your opponents control enter the battlefield tapped. Whenever a creature enters the battlefield under an opponent's control, you gain 1 life.

No more than two creatures can attack you each combat.

Goad all creatures you don't control. (Until your next turn, those creatures attack each combat if able and attack a player other than you if able.)

Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.

Cumulative upkeep—Pay 2 life. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) When Glacial Chasm enters the battlefield, sacrifice a land. Creatures you control can't attack. Prevent all damage that would be dealt to you.

{T}: Untap target attacking creature. Prevent all combat damage that would be dealt to and dealt by that creature this turn.

({W/P} can be paid with either {W} or 2 life.) Creatures can't attack you or planeswalkers you control unless their controller pays {W/P} for each of those creatures.

Flying, defender As Pramikon, Sky Rampart enters the battlefield, choose left or right. Each player may attack only the nearest opponent in the chosen direction and planeswalkers controlled by that opponent.

Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.

No more than one creature can attack each combat. No more than one creature can block each combat.

Prevent all combat damage that would be dealt to and dealt by creatures you control.

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.) Equip {1}

Cast this spell only during an opponent's turn and only during combat. Prevent all combat damage that would be dealt to you and planeswalkers you control this turn. Untap all attacking creatures and goad them. After this phase, there is an additional combat phase.

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

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

{T}: Add {C}. {1}, {T}, Sacrifice Mind Stone: Draw a card.

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

Equipped creature gets +2/+2 and has protection from green and from white. Whenever equipped creature deals combat damage to a player, exile up to one target creature you own, then search your library for a basic land card. Put both cards onto the battlefield under your control, then shuffle. Equip {2}

{T}: Add {C}. {T}: Add {R} or {W}. Talisman of Conviction deals 1 damage to you.

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

{T}: Add {C}. {T}: Add {W} or {U}. Talisman of Progress deals 1 damage to you.

You have no maximum hand size. {T}: Add {C}.

Choose two — • Destroy all artifacts. • Destroy all enchantments. • Destroy all creatures with mana value 3 or less. • Destroy all creatures with mana value 4 or greater.

This spell costs {1} less to cast for each creature on the battlefield. Blasphemous Act deals 13 damage to each creature.

The owner of target permanent shuffles it into their library, then reveals the top card of their library. If it's a permanent card, they put it onto the battlefield.

Destroy all creatures.

This spell can't be countered. Counter target noncreature spell.

Return all creatures to their owners' hands.

Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Counter target noncreature spell. Your opponents can't cast noncreature spells this turn.

Gain control of all permanents you own. (This effect lasts indefinitely.) Cycling {2} ({2}, Discard this card: Draw a card.)

The owner of target nonland permanent shuffles it into their library, then draws two cards.

Exchange control of target land you control and target land an opponent controls. (This effect lasts indefinitely.)

Exchange control of two target permanents that share a permanent type.

When Vedalken Plotter enters the battlefield, exchange control of target land you control and target land an opponent controls.

{5}: Exchange control of Avarice Totem and target nonland permanent.

Vigilance Creatures can't attack you or planeswalkers you control unless their controller pays {1} for each of those creatures.

At the beginning of each player's upkeep, Barbed Wire deals 1 damage to that player. {2}: Prevent the next 1 damage that would be dealt by Barbed Wire this turn.

{T}: Target player gains control of target artifact, creature, or land you control.

Counter target spell.

Choose one or more — • Exile all artifacts. • Exile all creatures. • Exile all enchantments. • Exile all graveyards.

Destroy target permanent. Its controller creates a 3/3 green Elephant creature token.

{T}: Add {C}. {1}{W}, {T}: Put target enchantment card from your graveyard on top of your library.

Hithlain Rope can't be sacrificed. {1}, {T}: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle. The player to your right gains control of Hithlain Rope. {2}, {T}: Draw a card. The player to your right gains control of Hithlain Rope.

Whenever a player casts a spell, that player returns a land they control to its owner's hand.

Whenever a player casts a spell with mana value 3 or less, Pyrostatic Pillar deals 2 damage to that player.

Lands don't untap during their controllers' untap steps. At the beginning of each player's upkeep, that player untaps a land they control.

Flying At the beginning of your upkeep, sacrifice an artifact other than Rust Elemental. If you can't, tap Rust Elemental and you lose 4 life.

When Solemn Simulacrum enters the battlefield, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. When Solemn Simulacrum dies, you may draw a card.

Creatures can't attack you or planeswalkers you control unless their controller pays {X} for each of those creatures, where X is the number of enchantments you control.

Destroy target nonland permanent. Its controller creates a 1/1 white Human creature token.

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Exchange control of target noncreature spell and target creature. Then the spell's controller may choose new targets for it.

This spell can't be countered. Destroy all creatures.

Haste Into the TARDIS — Whenever The Ninth Doctor becomes untapped during your untap step, you get an additional upkeep step after this step.