Nitro-9 -- Whenever Ace, Fearless Rebel attacks, you may sacrifice an artifact. When you do, put a +1/+1 counter on Ace, Fearless Rebel, 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.)

{2}{U}, {T}: Copy target activated or triggered ability you control. You may choose new targets for the copy.

Ultimate Sacrifice -- {1}{U}, Sacrifice Adric: Counter target activated or triggered ability.

Doctor's companion (You can have two commanders if the other is the Doctor.)

When Alharu, Solemn Ritualist enters the battlefield, put a +1/+1 counter on each of up to two other target creatures.

Whenever a nontoken creature you control with a +1/+1 counter on it dies, create a 1/1 white Spirit creature token with flying.

Partner (You can have two commanders if both have partner.)

Whenever you attack, up to one target attacking creature can't be blocked this turn. Return that creature to its owner's hand at the beginning of the next end step.

Choose a Background (You can have a Background as a second commander.)

Haste

Whenever Amber Gristle O'Maul attacks, you may discard your hand. If you do, draw a card for each player being attacked.

Choose a Background (You can have a Background as a second commander.)

Partner with Rory Williams (When this creature enters the battlefield, target player may put Rory into their hand from their library, then shuffle.)

Whenever Amy Pond deals combat damage to a player, choose a suspended card you own and remove that many time counters from it.

Doctor's companion (You can have two commanders if the other is the Doctor.)

Flying

When Angelic Harold enters the battlefield, you may put a name sticker on a nonland permanent you own.

Each creature you control with three or more words in its name gets +1/+1.

Enlist (As this creature attacks, you may tap a nonattacking creature you control without summoning sickness. When you do, add its power to this creature's until end of turn.)

Whenever a creature you control attacks, if it enlisted a creature this combat, the creature that attacked gains double strike until end of turn. If that creature's power is 4 or greater, draw a card.

History Teacher -- Sagas you control have read ahead. (As a Saga enters the battlefield, choose a chapter and start with that many lore counters. Skipped chapters don't trigger.)

Doctor's companion (You can have two commanders if the other is the Doctor.)

Partner with Owen Grady, Raptor Trainer (When this creature enters the battlefield, target player may put Owen into their hand from their library, then shuffle.)

For each kind of counter on Blue, Loyal Raptor, each other Dinosaur you control enters the battlefield with a counter of that kind on it.

Menace

Whenever one or more Pirates you control deal damage to your opponents, exile the top card of each of those opponents' libraries. You may play those cards this turn, and you may spend mana as though it were mana of any color to cast those spells.

Partner (You can have two commanders if both have partner.)

Menace (This creature can't be blocked except by two or more creatures.)

Tunnel Snakes Rule! -- Whenever Butch DeLoria, Tunnel Snake attacks, it gets +1/+1 until end of turn for each other Rogue and/or Snake you control.

{1}{B}: Put a menace counter on another target creature. It becomes a Rogue in addition to its other types.

Vigilance

When Byrke, Long Ear of the Law enters, put a +1/+1 counter on each of up to two target creatures.

Whenever a creature you control with a +1/+1 counter on it attacks, double the number of +1/+1 counters on it.

Partner with Ukkima, Stalking Shadow (When this creature enters the battlefield, target player may put Ukkima into their hand from their library, then shuffle.)

Whenever a creature you control deals combat damage to a player, put a +1/+1 counter on that creature.

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.)

Commanders you control have ward {2}.

{T}: Add {W}{W}. Spend this mana only to cast Aura and/or Equipment spells.

{T}: Attach target Aura or Equipment you control to target creature you control. Activate only as a sorcery.

Lifelink

Exploit (When this creature enters the battlefield, you may sacrifice a creature.)

Other legendary creatures you control have exploit.

Whenever a creature you control exploits a creature, put a +1/+1 counter on each creature you control.

Flash

Crash Landing -- When Commander Sofia Daguerre enters the battlefield, destroy up to one target legendary permanent. That permanent's controller creates a Junk token. (It's an artifact with "{T}, Sacrifice this artifact: Exile the top card of your library. You may play that card this turn. Activate only as a sorcery.")

Vigilance

Whenever Desdemona, Freedom's Edge attacks, target creature card in your graveyard that's an artifact or that has mana value 3 or less gains escape until end of turn. The escape cost is equal to its mana cost plus exile two other cards from your graveyard. (You may cast it from your graveyard for its escape cost this turn.)

Haste

When Devil K. Nevil enters the battlefield, jump it over any number of creatures. If it clears those creatures, put that many +1/+1 counters on it. (You can see a jumping demonstration at DevilKNevil.com.)

Hunters for Hire -- Whenever a creature you control deals combat damage to a player, put a quest counter on it.

{1}, Remove a quest counter from a permanent you control: Create a Junk token. (It's an artifact with "{T}, Sacrifice this artifact: Exile the top card of your library. You may play that card this turn. Activate only as a sorcery.")

Flying

ED-E My Love - Whenever you attack, if the number of attacking creatures is greater than the number of quest counters on ED-E, Lonesome Eyebot, put a quest counter on it.

{2}, Sacrifice ED-E: Draw a card, then draw an additional card for each quest counter on ED-E.

Creature tokens you control have training. (Whenever a creature token you control attacks with another creature with greater power, put a +1/+1 counter on that token.)

Blind Betrayal -- Sacrifice another creature: Elder Arthur Maxson gains indestructible until end of turn.

Artifacts you control have ward {1}. (Whenever an artifact you control becomes the target of a spell or ability an opponent controls, counter it unless that player pays {1}.)

When Elder Owyn Lyons enters the battlefield or dies, return target artifact card from your graveyard to your hand.

Flying

Spells your opponents cast that target one or more commanders you control cost {3} more to cast.

Partner (You can have two commanders if both have partner.)

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

Whenever an Assassin you control deals combat damage to a player, draw a card.

Commanders you control have menace and deathtouch.

Partner (You can have two commanders if both have partner.)

Flying

Francisco, Fowl Marauder can't block.

Whenever one or more Pirates you control deal damage to a player, Francisco explores.

Partner (You can have two commanders if both have partner.)

Ghost of Ramirez DePietro can't be blocked by creatures with toughness 3 or greater.

Whenever Ghost of Ramirez DePietro deals combat damage to a player, choose up to one target card in a graveyard that was discarded or put there from a library this turn. Put that card into its owner's hand.

Partner (You can have two commanders if both have partner.)

{T}: Add {G}. When you spend this mana to cast a spell with mana value 6 or greater, draw a card.

Partner (You can have two commanders if both have partner.)

Deathtouch

At the beginning of your end step, you may pay {1}. When you do, destroy target creature with toughness X or less, where X is the number of Shrines you control.

Partner with Virtus the Veiled (When this creature enters the battlefield, target player may put Virtus into their hand from their library, then shuffle.)

Vigilance

Gorm the Great must be blocked if able, and Gorm must be blocked by two or more creatures if able.

Paradox -- Whenever you cast a spell from anywhere other than your hand, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.")

Doctor's companion (You can have two commanders if the other is the Doctor.)

Partner with Pako, Arcane Retriever (When this creature enters the battlefield, target player may put Pako into their hand from their library, then shuffle.)

You may play lands and cast noncreature spells from among cards you exiled that have fetch counters on them, and you may spend mana as though it were mana of any color to cast those spells.

{1}: Until end of turn, target token you control becomes a green Bear creature with base power and toughness 4/4 in addition to its other colors and types.

Choose a Background (You can have a Background as a second commander.)

As Hardy of Myra's Marvels enters the battlefield, choose a number.

Whenever you cast a spell with the chosen number of lines of flavor text, put that many +1/+1 counters on target creature.

Partner (You can have two commanders if both have partner.)

Vigilance, reach

When Harold and Bob, First Numens dies, if it was a creature, return it to the battlefield. It's an Aura enchantment with enchant Forest you control and "Enchanted Forest has '{T}: Add three mana of any one color. You get two rad counters.'" Harold and Bob loses all other abilities.

Huang Zhong, Shu General can't be blocked by more than one creature.

Science Teacher -- Each Saga spell you cast has replicate. The replicate cost is equal to its mana cost. (When you cast that Saga, copy it for each time you paid its replicate cost. Copies of permanents enter the battlefield as tokens.)

Doctor's companion (You can have two commanders if the other is the Doctor.)

Whenever Ian the Reckless attacks, if it's modified, you may have it deal damage equal to its power to you and any target. (Equipment, Auras you control, and counters are modifications.)

As Ignacio of Myra's Marvels enters the battlefield, choose armor, blood, book, bottle, fang, fire, scroll, spear, sword, or water.

Whenever you cast a spell with the chosen object in its art, create two Treasure tokens.

Partner (You can have two commanders if both have partner.)

Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.)

At the beginning of your end step, if you have the initiative, draw a card. Draw another card if you've completed a dungeon.

Choose a Background (You can have a Background as a second commander.)

{T}: Add {C}{C}. Spend this mana only to activate abilities.

---

Investigate X times. (Then exile this card. You may cast the creature later from exile.)

Trample

Whenever you cast a historic spell, Jamie McCrimmon gets +X/+X until end of turn, where X is that spell's mana value. (Artifacts, legendaries, and Sagas are historic.)

Doctor's companion (You can have two commanders if the other is the Doctor.)

Partner with Madame Vastra

First strike

Training (Whenever this creature attacks with another creature with greater power, put a +1/+1 counter on this creature.)

Whenever you sacrifice a Clue or Food, put a +1/+1 counter on another target creature you control.

As Katerina of Myra's Marvels enters the battlefield, choose a letter.

Whenever you cast a spell whose name begins with the chosen letter, create a white 2/2 Cat creature token with flying.

Partner (You can have two commanders if they both have partner.)

Whenever a commander you control attacks, put a +1/+1 counter on it.

Partner (You can have two commanders if both have partner.)

{T}, Sacrifice three other artifacts and/or creatures: Look at the top three cards of your library. Put two of them into your hand and the other into your graveyard.

Partner (You can have two commanders if both have partner.)

Partner with Sylvia Brightspear (When this creature enters the battlefield, target player may put Sylvia into their hand from their library, then shuffle.)

Flying, haste

Knights your team controls have flying and haste.

Flying

Whenever two or more creatures you control attack a player, target attacking creature without flying gains flying until end of turn.

Partner with Kamber, the Plunderer (When this creature enters the battlefield, target player may put Kamber into their hand from their library, then shuffle.)

First strike

{2}, Sacrifice an artifact or creature: Goad target creature. (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.)

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, Sevateem Warrior.

Doctor's companion (You can have two commanders if the other is the Doctor.)

Horsemanship (This creature can't be blocked except by creatures with horsemanship.)

{T}: Draw a card. Activate only during your turn, before attackers are declared.

Other Mice you control get +1/+1.

When Mabel, Heir to Cragflame enters, create Cragflame, a legendary colorless Equipment artifact token with "Equipped creature gets +1/+1 and has vigilance, trample, and haste" and equip {2}.

Partner with Jenny Flint (When this creature enters the battlefield, target player may put Jenny Flint into their hand from their library, then shuffle.)

Madame Vastra must be blocked if able.

Whenever a creature dealt damage by Madame Vastra this turn dies, create a Clue token and a Food token.

Vigilance, trample

Whenever a creature you control deals combat damage to a player, draw a card if that creature has a +1/+1 counter on it. If it doesn't, put a +1/+1 counter on it.

Woman Who Walked the Earth -- When Martha Jones enters the battlefield, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")

Whenever you sacrifice a Clue, Martha Jones and up to one other target creature can't be blocked this turn.

Doctor's companion (You can have two commanders if the other is the Doctor.)

Partner with Pippin, Warden of Isengard (When this creature enters the battlefield, target player may put Pippin into their hand from their library, then shuffle.)

Whenever one or more artifacts enter the battlefield under your control, create a 1/1 white Soldier creature token with lifelink. This ability triggers only once each turn.

Whenever Miara, Thorn of the Glade or another Elf you control dies, you may pay {1} and 1 life. If you do, draw a card.

Partner (You can have two commanders if both have partner.)

Whenever a token you control leaves the battlefield, put a +1/+1 counter on Nadier, Agent of the Duskenel.

When Nadier leaves the battlefield, create a number of 1/1 green Elf Warrior creature tokens equal to its power.

Partner (You can have two commanders if both have partner.)

Partner with Yannik, Scavenging Sentinel (When this creature enters the battlefield, target player may put Yannik into their hand from their library, then shuffle.)

Menace

Whenever another creature you control leaves the battlefield, if it had one or more counters on it, you draw a card and you lose 1 life.

As Nocturno of Myra's Marvels enters the battlefield, choose a word with five or more letters.

Whenever you cast a spell with the chosen word in its rules text, you draw a card and you lose 2 life.

Partner (You can have two commanders if both have partner.)

You have no maximum hand size.

Sonic Booster -- Whenever Nyssa of Traken attacks, sacrifice X artifacts. When you sacrifice one or more artifacts this way, tap up to X target creatures and you draw X cards.

Doctor's companion (You can have two commanders if the other is the Doctor.)

Partner with Blue, Loyal Raptor

{T}: Put your choice of a menace, trample, reach, or haste counter on target Dinosaur. Activate only as a sorcery.

{T}: Target creature gets +0/+2 until end of turn. Activate only during your turn, before attackers are declared.

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.)

Reach (This creature can block creatures with flying.)

Whenever Rashka the Slayer blocks one or more black creatures, Rashka gets +1/+2 until end of turn.

Once during each of your turns, you may cast a spell from among cards in your graveyard that were milled this turn.

{T}: Each player mills a card. (They each put the top card of their library in their graveyard.)

You may cast Dragon spells and artifact spells as though they had flash.

Choose a Background (You can have a Background as a second commander.)

Vigilance

{1}, {T}: Create a tapped token that's a copy of target token that entered the battlefield this turn.

Doctor's companion (You can have two commanders if the other is the Doctor.)

Rose Tyler gets +1/+1 for each time counter on it.

Bad Wolf -- Whenever Rose Tyler attacks, put a time counter on it for each suspended card you own and each other permanent you control with a time counter on it.

Doctor's companion (You can have two commanders if the other is the Doctor.)

Whenever Ryan attacks, exile cards from the top of your library until you exile a nonland card. You may cast the exiled card without paying its mana cost if it's a spell with mana value less than or equal to Ryan's power. Put the exiled cards not cast this way on the bottom of your library in a random order.

Doctor's companion (You can have two commanders if the other is the Doctor.)

Menace

At the beginning of your end step, if you have the initiative, create a Treasure token. Create three of those tokens instead if you've completed a dungeon.

Choose a Background (You can have a Background as a second commander.)

Whenever you cast a historic spell, investigate. This ability triggers only once each turn. (Artifacts, legendaries, and Sagas are historic. To investigate, create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")

Doctor's companion (You can have two commanders if the other is the Doctor.)

Haste

As long as an artifact entered the battlefield under your control this turn, creatures you control get +2/+2.

Battalion -- Whenever Sentinel Sarah Lyons and at least two other creatures attack, Sentinel Sarah Lyons deals damage equal to the number of artifacts you control to target player.

Flying

Whenever Siani, Eye of the Storm attacks, scry X, where X is the number of attacking creatures with flying.

Partner (You can have two commanders if both have partner.)

The Nuka-Cola Challenge -- Whenever one or more creatures you control deal combat damage to a player, put a quest counter on Sierra, Nuka's Biggest Fan and create a Food token.

Whenever you sacrifice a Food, target creature you control gets +X/+X until end of turn, where X is the number of quest counters on Sierra.

Whenever Skanos Dragonheart attacks, it gets +X/+X until end of turn, where X is the greatest power among other Dragons you control and Dragon cards in your graveyard.

Choose a Background (You can have a Background as a second commander.)

Horsemanship (This creature can't be blocked except by creatures with horsemanship.)

When Sun Ce, Young Conquerer enters the battlefield, you may return target creature to its owner's hand.

If you would planeswalk, instead look at the top two cards of your planar deck, put one on the bottom of your planar deck and the other on top, then planeswalk.

{T}: Add {G}.

Doctor's companion (You can have two commanders if the other is the Doctor.)

Flying, haste

Grandeur -- Discard another card named Tarox Bladewing: Tarox Bladewing gets +X/+X until end of turn, where X is its power.

Brave Heart -- Whenever you attack, target attacking historic creature gets +1/+1 and gains indestructible until end of turn. (Artifacts, legendaries, and Sagas are historic.)

Doctor's companion (You can have two commanders if the other is the Doctor.)

When The Eighth Doctor enters the battlefield, mill three cards.

Once during each of your turns, you may play a historic land or cast a historic permanent spell from your graveyard. If you do, it gains "If this permanent would leave the battlefield, exile it instead of putting it anywhere else."

I. AM. TALKING! -- Whenever The Eleventh Doctor deals combat damage to a player, you may exile a card from your hand with a number of time counters on it equal to its mana value. If it doesn't have suspend, it gains suspend.

{2}: Target creature with power 3 or less can't be blocked this turn.

Peaceful Coexistence -- At the beginning of your end step, put a +1/+1 counter on each creature you control that didn't attack or enter the battlefield this turn. Untap those creatures.

When The First Doctor enters the battlefield, search your library and/or graveyard for a card named TARDIS, reveal it, and put it into your hand. If you search your library this way, shuffle.

Whenever you cast a spell with cascade, put a +1/+1 counter on target artifact or creature.

You may look at the top card of your library any time.

Would You Like A...? -- Once each turn, you may play a historic land or cast a historic spell from the top of your library. When you do, create a Food token. (Artifacts, legendaries, and Sagas are historic.)

When The Fugitive Doctor enters the battlefield, investigate.

Whenever The Fugitive Doctor attacks, you may sacrifice a Clue. When you do, target instant or sorcery card in your graveyard gains flashback {2}{R}{G} until end of turn. (You may cast that card from your graveyard for its flashback cost. Then exile it.)

When The Motherlode, Excavator enters the battlefield, choose target opponent. You get an amount of {E} (energy counters) equal to the number of nonbasic lands that player controls.

Whenever The Motherlode attacks, you may pay {E}{E}{E}{E}. When you do, destroy target nonbasic land defending player controls, and creatures that player controls without flying can't block this turn.

When 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 artifact: Draw a card.")

Partner with Rhoda, Geist Avenger (When this creature enters the battlefield, target player may put Rhoda into their hand from their library, then shuffle.)

Flying

At the beginning of each combat, tap up to one target creature.

Partner with Silvar, Devourer of the Free (When this creature enters the battlefield, target player may put Silvar into their hand from their library, then shuffle.)

At the beginning of your end step, if you attacked this turn, create a 1/1 white Human Soldier creature token.

Menace

Whenever Veronica, Dissident Scribe attacks, you may discard a card. If you do, draw a card.

Whenever you discard one or more nonland cards for the first time each turn, create a Junk token. (It's an artifact with "{T}, Sacrifice this artifact: Exile the top card of your library. You may play that card this turn. Activate only as a sorcery.")

Deal with the Black Guardian -- When Vislor Turlough enters the battlefield, you may have an opponent gain control of it. If you do, it's goaded for as long as they control it.

At the beginning of your end step, draw a card, then you lose life equal to the number of cards in your hand.

Doctor's companion (You can have two commanders if the other is the Doctor.)

{T}: Target creature you control gets +2/+0 until end of turn. Activate only during your turn, before attackers are declared.

Horsemanship (This creature can't be blocked except by creatures with horsemanship.)

Whenever Zhang He, Wei General attacks, each other creature you control gets +1/+0 until end of turn.

Whenever Zhang Liao, Hero of Hefei deals damage to an opponent, that opponent discards a card.

Horsemanship (This creature can't be blocked except by creatures with horsemanship.)

Whenever Zhao Zilong, Tiger General blocks, it gets +1/+1 until end of turn.

Haste

Whenever Éomer of the Riddermark attacks, if you control a creature with the greatest power among creatures on the battlefield, create a 1/1 white Human Soldier creature token.