This land enters tapped unless you control an Island. {T}: Add {U}. {U}, {T}: The next spell you cast this turn has improvise. (Your artifacts can help cast that spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)

{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.

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

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

{T}: Add {C}. {2}, {T}, Sacrifice this land: Destroy target nonbasic land an opponent controls. Each player searches their library for a basic land card, puts it onto the battlefield, then shuffles.

As this land enters, you may reveal an Island or Mountain card from your hand. If you don't, this land enters tapped. {T}: Add {U} or {R}.

When Gallifrey Council Chamber enters, surveil 1. (Look at the top card of your library. You may put that card into your graveyard.) {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a Time Lord or Alien spell or activate an ability of a Time Lord or Alien.

{T}: Add {C}. {T}, Sacrifice this land: Destroy target land. Its controller may search their library for a basic land card, put it onto the battlefield, then shuffle.

({T}: Add {U}.)

({T}: Add {R}.)

({T}: Add {U}.) This land enters tapped unless you control three or more other Islands. When this land enters untapped, you may put target instant or sorcery card from your graveyard on top of your library.

{T}: Add {U}. Channel — {3}{U}, Discard this card: Return target artifact, creature, enchantment, or planeswalker to its owner's hand. This ability costs {1} less to activate for each legendary creature you control.

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 two or more other lands. {T}: Add {U} or {R}.

{T}: Add {C}{C}. Activate only if you control five or more lands.

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

{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.

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

{T}, Sacrifice this artifact: Put up to one target card from your graveyard on the bottom of your library. Draw a card.

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

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

{T}, Exile this artifact: Each player exiles the top seven cards of their library. Until your next turn, players may play cards they exiled this way, and they can't play cards from their hand. Activate only as a sorcery.

At the beginning of your end step, put an influence counter on Palantír of Orthanc and scry 2. Then target opponent may have you draw a card. If that player doesn't, you mill X cards, where X is the number of influence counters on Palantír of Orthanc, and that player loses life equal to the total mana value of those cards.

{3}: Put target card from a graveyard on the bottom of its owner's library.

Flying, trample When RMS Titanic deals combat damage to a player, sacrifice it and create that many Treasure tokens. Crew 3 (Tap any number of creatures you control with total power 3 or more: This Vehicle becomes an artifact creature until end of turn.)

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

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 {U} or {R}. This artifact deals 1 damage to you.

At the beginning of your upkeep, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.") {T}, Sacrifice three Clues: Search your library for a card, put that card into your hand, then shuffle.

As an additional cost to cast this spell, sacrifice an artifact or creature. Search your library for an Equipment or Vehicle card, put that card onto the battlefield, then shuffle. If it has mana value less than the sacrificed permanent's mana value, scry 2.

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

Destroy target land. Its controller may search their library for a basic land card, put it onto the battlefield tapped, then shuffle. Draw a card.

Target player gains control of target permanent you control.

Exile the top two cards of your library. Until the end of your next turn, you may play those cards. Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.)

Look at the top three cards of your library. Put one of them into your hand, put one of them on the bottom of your library, and exile one of them. You may play the exiled card this turn.

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

Destroy target land. Its controller may search their library for a basic land card, put it onto the battlefield, then shuffle. Draw a card.

Target opponent gains control of target permanent you control.

Exile the top three cards of your library. Until the end of your next turn, you may play those cards. If this spell was cast from a graveyard, you may play cards this way without paying their mana costs. Flashback {7}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Spectacle {R} (You may cast this spell for its spectacle cost rather than its mana cost if an opponent lost life this turn.) Exile the top two cards of your library. Until the end of your next turn, you may play those cards.

Scry 2, then draw a card. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Exile the top two cards of your library. Until the end of your next turn, you may play those cards.

As an additional cost to cast this spell, sacrifice an artifact. Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle.

{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.

Changeling (This card is every creature type.) Reach {2}: Put target card from your graveyard on the bottom of your library.

When this creature enters, each player may scry 1. (To scry 1, look at the top card of your library, then you may put that card on the bottom.)

Defender At the beginning of your upkeep, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Flying Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.) {2}: Put target card from a graveyard on the bottom of its owner's library.

When this creature enters, search your library for a creature card with power 2 or less, reveal it, put it into your hand, then shuffle.

Defender {T}: Put target card from a graveyard on the bottom of its owner's library.

Flying, trample When this creature enters, for each player, destroy up to one nonbasic land that player controls. For each land destroyed this way, its controller may search their library for a basic land card, put it onto the battlefield tapped, then shuffle.

{U}, {T}, Return an artifact you control to its owner's hand: You may put an artifact card from your hand onto the battlefield.

At the beginning of your upkeep, surveil 1. (Look at the top card of your library. You may put it into your graveyard.) Threshold — As long as seven or more cards are in your graveyard, creatures your opponents control get -1/-0.

When this creature enters, scry 2. Then each opponent may scry 1. (To scry X, a player looks at the top X cards of their library, then puts any number of them on the bottom and the rest on top in any order.)

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

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

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 reveal this card from your opening hand. If you do, scry 3 at the beginning of your first upkeep. Flying At the beginning of your upkeep, scry 1.

You may look at the top card of your library any time. As long as The Reality Chip is attached to a creature, you may play lands and cast spells from the top of your library. Reconfigure {2}{U} ({2}{U}: Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.)

The first spell you cast from anywhere other than your hand each turn has demonstrate. (When you cast that spell, you may copy it. If you do, choose an opponent to also copy it. A copy of a permanent spell becomes a token.) Whenever you copy a spell, put a +1/+1 counter on The Twelfth Doctor.

{2}: Put target card from your graveyard on the bottom of your library.

Whenever this creature or another artifact you control enters, you may draw a card. If you do, discard a card. {2}: Put target card from your graveyard on the bottom of your library.

Enchant creature As long as enchanted creature is blue, it gets +1/+1 and has shroud. (It can't be the target of spells or abilities.) As long as enchanted creature is red, it gets +1/+1 and has haste.

Whenever you cast an instant or sorcery spell from your hand, manifest the top card of your library. (Put that card onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.) Whenever a face-down creature you control dies, exile it if it's an instant or sorcery card. You may cast that card until the end of your next turn.

At the beginning of your upkeep, scry 1. {5}{U}: Exchange control of this enchantment and target nonland permanent. Activate only as a sorcery.

Play with the top card of your library revealed. You may play lands and cast spells from the top of your library.

At the beginning of your upkeep, scry 1. Whenever you discard a card, each opponent mills two cards. (They put the top two cards of their library into their graveyard.)

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Search your library for a Doctor card, reveal it, put it into your hand, then shuffle. II — Create a Food token and a 1/1 white Human creature token with "Doctor spells you cast cost {1} less to cast." III — Create a token that's a copy of target creature, except it's a legendary Alien named Prisoner Zero.

Target creature gets +3/+1 until end of turn. Exile the top card of your library. Until the end of your next turn, you may play that card.

Draw three cards, then put two cards from your hand on top of your library in any order.

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.

Look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order. Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Counter target noncreature spell.

Counter target spell. If that spell is countered this way, put it on the bottom of its owner's library instead of into that player's graveyard. Put Spell Crumple on the bottom of its owner's library.

Until end of turn, target Time Lord you control gains "When this creature dies, reveal cards from the top of your library until you reveal a Time Lord creature card. Put that card onto the battlefield and the rest on the bottom of your library in a random order."