The first historic spell you cast each turn has convoke. (Your creatures can help cast it. Each creature you tap while casting it pays for {1} or one mana of that creature's color.) Doctor's companion (You can have two commanders if the other is the Doctor.)

This land enters tapped. {T}: Add {G} or {W}.

({T}: Add {G} or {W}.) This land enters tapped.

This land enters tapped. {T}: Add {W} or {U}.

({T}: Add {G} or {W}.) This land enters tapped unless you control two or more basic lands.

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

{T}: Add {C}. {2}{G}{W}, {T}: Put a +1/+1 counter on each creature you control.

({T}: Add {W} or {U}.) This land enters tapped.

{T}: Add {C}. {4}, {T}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

This land enters tapped. {T}: Add {C}. {2}, {T}, Sacrifice this land: Search your library for a Forest card and a Plains card, put them onto the battlefield tapped, then shuffle.

({T}: Add {G} or {U}.) This land enters tapped.

{T}: Add {C}. {4}, {T}: Target creature can't be blocked this turn.

{T}: Add {C}. {1}{S}, {T}: Look at the top card of your library. If that card is snow, you may reveal it and put it into your hand. ({S} can be paid with one mana from a snow source.)

This land enters tapped. {T}: Add {G}, {W}, or {U}.

({T}: Add {G}.)

({T}: Add {U}.)

({T}: Add {W}.)

Flash Flying When this creature enters, exile target spell. It becomes plotted. (Its owner may cast it as a sorcery on a later turn without paying its mana cost.) Spells your opponents cast from graveyards or from exile cost {2} more to cast.

Choose two — • Counter target spell. • Return target permanent to its owner's hand. • Tap all creatures your opponents control. • Draw a card.

{1}, {T}: Tap target creature. This ability costs {1} less to activate during your turn. {3}, Sacrifice Hylda's Crown of Winter: Draw a card for each tapped creature your opponents control.

{S}, {T}: Tap target artifact or creature. ({S} can be paid with one mana from a snow source.)

Destroy target enchantment. Flashback {G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Return target spell to its owner's hand. Draw a card.

{1}, {T}: You may tap or untap target permanent. Activate only if you control four or more snow permanents.

Defender {2}{W}, {T}: Tap target creature. You may put a stun counter on it. If you do, put a stun counter on this creature. (If a permanent with a stun counter would become untapped, remove one from it instead.)

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

Prevent all damage that sources of the color of your choice would deal this turn. Flashback—Tap an untapped white creature you control. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Changeling (This card is every creature type.) Whenever you or a permanent you control becomes the target of a spell or ability an opponent controls, counter that spell or ability unless its controller pays {1}.

Artifacts, creatures, and lands your opponents control enter tapped.

Creatures with power 3 or greater don't untap during their controllers' untap steps.

Whenever one or more creatures you control deal combat damage to a player, tap all lands that player controls and untap all lands you control.

Players skip their untap steps. At the beginning of your upkeep, sacrifice this enchantment unless you pay {U}.

Fading 4 (This artifact enters with four fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can't, sacrifice it.) At the beginning of each player's upkeep, that player taps an untapped artifact, creature, or land they control for each fade counter on this artifact.

Nitro-9 — Whenever Ace attacks, you may sacrifice an artifact. When you do, put a +1/+1 counter on Ace, then it fights up to one target creature defending player controls. Doctor's companion (You can have two commanders if the other is the Doctor.)

Compleated ({G/W/P} can be paid with {G}, {W}, or 2 life. If life was paid, this planeswalker enters with two fewer loyalty counters.) +1: Reveal the top card of your library. If it's a creature or planeswalker card, put it into your hand. Otherwise, you may put it on the bottom of your library. −3: Distribute three +1/+1 counters among up to three target creatures. They gain vigilance until end of turn. −6: You get an emblem with "Whenever you cast a creature or planeswalker spell, target opponent gets two poison counters."

+1: Put a +1/+1 counter on up to one target creature. It gains indestructible until end of turn. −2: Whenever one or more nontoken creatures attack this turn, create that many 1/1 white Soldier creature tokens that are tapped and attacking. −6: You get an emblem with "At the beginning of combat on your turn, create a 1/1 white Soldier creature token, then put a +1/+1 counter on each creature you control."

Whenever you cast a creature spell, if {S} of any of that spell's colors was spent to cast it, that creature enters with an additional +1/+1 counter on it. ({S} is mana from a snow source.)

When this creature enters, put a +1/+1 counter on each of any number of target creatures and a charge counter on each of any number of target artifacts. {1}, {T}, Sacrifice another artifact: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Whenever you tap an untapped creature an opponent controls, you may pay {1}. When you do, choose one — • Create a 4/4 white and blue Elemental creature token. • Put a +1/+1 counter on each creature you control. • Scry 2, then draw a card.

Whenever an opponent draws a card except the first one they draw in each of their draw steps, put a +1/+1 counter on Leela. Doctor's companion (You can have two commanders if the other is the Doctor.)

{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."

Equipped creature gets +2/+2 and has protection from white and from blue. Whenever equipped creature deals combat damage to a player, put a +1/+1 counter on a creature you control, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.) Equip {2}

Defender (This creature can't attack.) This creature enters with a +1/+1 counter on it. At the beginning of each player's upkeep, that player draws a card for each +1/+1 counter on this creature. {2}{W}{U}: Put a +1/+1 counter on this creature.

Suspend 4—{U} (Rather than cast this card from your hand, pay {U} and exile it with four 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.) Target player draws three cards.

({S} can be paid with one mana from a snow source.) When this artifact enters, draw a card. {1}, {T}: Add one mana of any color.

You may look at the top card of your library any time. You may play lands from the top of your library. Coven — As long as you control three or more creatures with different powers, you may cast creature spells from the top of your library.

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

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

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

Players have no maximum hand size. How Civil of You — At the beginning of your end step, each player may draw a card. Each opponent who does can't attack you or permanents you control during their next turn.

You may cast creature spells as though they had flash. +1: Until your next turn, up to one target creature gains vigilance and reach. −2: Look at the top three cards of your library. Exile one face down and put the rest on the bottom of your library in any order. For as long as it remains exiled, you may cast it if it's a creature spell.

You may play two additional lands on each of your turns.

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

{T}: Add {C}.

This artifact enters tapped. As this artifact enters, choose a color. {T}: Add one mana of the chosen color.

Flying When this creature enters, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this token: You gain 3 life.") {1}{G}, {T}: Create a Food token. {T}, Sacrifice a Food: Add one mana of any color.

When this artifact enters or is put into a graveyard from the battlefield, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.) {T}: Add {G}, {W}, or {U}.

{T}: Untap another target snow permanent.

{T}: Untap target snow land.

Parley — {T}: Each player reveals the top card of their library. For each nonland card revealed this way, add {G} and you gain 1 life. Then each player draws a card.

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

When this creature enters, search your library for a snow land card, reveal it, put it into your hand, then shuffle. This creature gets +1/+0 for each other snow permanent you control.

Whenever The Seventh Doctor attacks, choose a card in your hand. Defending player guesses whether that card's mana value is greater than the number of artifacts you control. If they guessed wrong, you may cast it without paying its mana cost. If you don't cast a spell this way, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")

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