Impossible Girl — If Clara Oswald is your commander, choose a color before the game begins. Clara Oswald is the chosen color. If a triggered ability of a Doctor you control triggers, that ability triggers an additional time. Doctor's companion (You can have two commanders if the other is the Doctor.)

Counter target noncreature spell. Its controller creates two Treasure tokens. (They're artifacts with "{T}, Sacrifice this token: Add one mana of any color.")

Target player draws X cards. Shuffle Blue Sun's Zenith into its owner's library.

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.

Counter target spell.

Choose one — • Counter target spell with mana value less than or equal to the number of cards in its controller's graveyard. • Destroy target creature with mana value less than or equal to the number of cards in its controller's graveyard.

Return all creatures to their owners' hands.

Exile target spell, then roll a d20 and add that spell's mana value. 1—14 | You may cast the exiled card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell. 15+ | You may cast the exiled card without paying its mana cost for as long as it remains exiled.

Destroy target creature. You lose 2 life.

Choose one — • Counter target spell. • You may choose new targets for target spell. • Copy target instant or sorcery spell. You may choose new targets for the copy.

Target player returns each commander they control from the battlefield to the command zone. Draw a card.

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

{T}: Add three mana of any one color.

At the beginning of combat on your turn, create a token that's a copy of equipped creature, except the token isn't legendary. That token gains haste. Equip {5}

If you would lose unspent mana, that mana becomes colorless instead.

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.) Equip {0}

Equipped creature has shroud. (It can't be the target of spells or abilities.) {U}{U}: Attach Neurok Stealthsuit to target creature you control. Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

As this Equipment becomes attached to a creature, choose a creature card name and a creature type. Equipped creature has ward {1}, it can't be blocked, and its name and creature type are the last chosen name and creature type. Equip {2}

{T}: Add one mana of any color. Tap an untapped legendary creature you control: Add one mana of any color.

{T}: Add one mana of any color. At the beginning of your upkeep, put a night counter on this artifact. Then if it has eight or more night counters on it, remove all of them and create eight colorless snow artifact tokens named Replicated Ring with "{T}: Add one mana of any color."

{T}, Tap an untapped creature you control: Add one mana of any color.

{2}, {T}: Copy target triggered ability you control. You may choose new targets for the copy. (A triggered ability uses the words "when," "whenever," or "at.")

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control. It can attack and {T} no matter when it came under your control.) Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

{T}: Add {C}. {T}: Add {B} or {R}. This artifact deals 1 damage to you.

At the beginning of your upkeep, scry 2. Whenever you choose to put one or more cards on the bottom of your library while scrying, exile that many cards from the bottom of your library. During your turn, you may play cards exiled with The Temporal Anchor.

{T}: Add {B}. {T}: Add {R}. Activate only if you control a Swamp or a Mountain.

({T}: Add {B} or {R}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

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

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

{T}: Add {C}. {2}, {T}, Sacrifice this land: Destroy target nonbasic land an opponent controls. That land's controller may search their library for a basic land card, put it onto the battlefield, then shuffle. You may search your library for a basic land card, put it onto the battlefield, then shuffle.

This land enters tapped unless you control a Swamp or a Mountain. {T}: Add {B} or {R}.

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

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

({T}: Add {U}.)

This land enters tapped unless you have two or more opponents. {T}: Add {B} or {R}.

({T}: Add {R}.)

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

This land enters tapped. {T}: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

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

({T}: Add {U} or {R}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

This land enters tapped unless you control an Island or a Mountain. {T}: Add {U} or {R}.

({T}: Add {B}.)

This land enters tapped unless you have two or more opponents. {T}: Add {U} or {R}.

{T}: Add {U}. Put a time counter on Trenzalore Clocktower. {1}{U}, {T}, Remove twelve time counters from Trenzalore Clocktower and exile it: Shuffle your graveyard and hand into your library, then draw seven cards. Activate only if you control a Time Lord.

{3}, Sacrifice this creature: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

Flying At the beginning of your upkeep, you may gain control of target permanent until end of turn. If you do, untap it and it gains haste until end of turn.

Flying At the beginning of your upkeep, each player reveals the top card of their library, loses life equal to that card's mana value, then puts it into their hand.

Flying Cumulative upkeep—Gain control of a land you don't control. (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.) This creature gets +1/+1 for each land you control but don't own. When this creature leaves the battlefield, each player gains control of each land they own that you control.

At the beginning of your upkeep, you and target opponent each reveal the top card of your library. You each lose life equal to the mana value of the card revealed by the other player. You each put the card you revealed into your hand.

Menace Whenever Obeka deals combat damage to a player, you get that many additional upkeep steps after this phase.

Your opponents can't gain life. At the beginning of your upkeep, Quakebringer deals 2 damage to each opponent. This ability triggers only if Quakebringer is on the battlefield or if Quakebringer is in your graveyard and you control a Giant. Foretell {2}{R}{R}

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

You may have this creature enter 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.

Flying At the beginning of each of your postcombat main phases, there is an additional beginning phase after this phase. (The beginning phase includes the untap, upkeep, and draw steps.)

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.

Flying Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.) At the beginning of your upkeep, if you have the city's blessing, reveal the top card of your library and put it into your hand. Each opponent loses X life and you gain X life, where X is that card's mana value.

Destroy all creatures. For each nontoken creature destroyed this way, you create a tapped Treasure token.

Destroy target creature or enchantment an opponent controls. You lose life equal to that permanent's mana value.

Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.) All creatures get -2/-2 until end of turn. If you have the city's blessing, instead only creatures your opponents control get -2/-2 until end of turn.

Draw two cards. Exile Inspiring Refrain with three time counters on it. Suspend 3—{2}{U} (Rather than cast this card from your hand, you may pay {2}{U} and exile it with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)

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.

Create a token that's a copy of target creature you control, except it isn't legendary. Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

At the beginning of your upkeep, put a time counter on this enchantment. Once each turn, you may pay {0} rather than pay the mana cost for a spell you cast with mana value X or less, where X is the number of time counters on this enchantment.

At the beginning of your upkeep, the Ring tempts you. Whenever you choose a creature as your Ring-bearer, you may pay 2 life. If you do, draw a card.

When this enchantment enters, you become the monarch. At the beginning of your upkeep, each opponent loses 3 life unless they discard a card. If you're the monarch, instead each opponent loses 6 life unless they discard two cards.

When this enchantment enters, you become the monarch. At the beginning of your upkeep, create a 3/1 red Knight creature token. Then if you're the monarch, this enchantment deals X damage to each opponent, where X is the number of creatures you control.

Enchant permanent Enchanted permanent has hexproof. When enchanted permanent leaves the battlefield, if it was historic, draw two cards. (Artifacts, legendaries, and Sagas are historic.)

At the beginning of your upkeep, create a token that's a copy of another target nonland permanent you control.

Enchant creature or planeswalker you control When enchanted permanent dies or is put into exile, return that card to the battlefield under your control.

If this card is in your opening hand, you may begin the game with it on the battlefield. You may cast spells as though they had flash.

Enchant player At the beginning of enchanted player's first upkeep each turn, that player gets an additional upkeep step after this step.