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.)

Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.)

Trample

When Agatha's Champion enters the battlefield, if it was bargained, it fights up to one target creature you don't control. (Each deals damage equal to its power to the other.)

This spell costs {2} less to cast if it targets a legendary creature you control.

Target creature you control deals damage equal to twice its power to target creature or planeswalker you don't control.

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

{T}: Add {C}.

Basic landcycling {1} ({1}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)

Whenever Astrid Peth enters the battlefield or attacks, create a Food token.

Brand-new Sky -- Whenever you sacrifice a Clue or Food, Astrid Peth explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)

Enchant artifact or land

Enchanted permanent has "{T}: Target player adds two mana of any one color. The next spell they cast this turn has cascade." (When they cast their next spell, they exile cards from the top of their library until they exile a nonland card that costs less. They may cast it without paying its mana cost. They put the exiled cards on the bottom in a random order.)

First strike

Whenever a Pirate you control attacks, choose one that hasn't been chosen this turn --

• Create a Treasure token.

• Target creature can't block this turn.

• Exile the top card of your library. You may play it this turn.

{T}, Sacrifice Buried Treasure: Add one mana of any color.

{5}, Exile Buried Treasure from your graveyard: Discover 5. Activate only as a sorcery. (Exile cards from the top of your library until you exile a nonland card with mana value 5 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

Return up to one target artifact or enchantment card from your graveyard to the battlefield. Exile the top two cards of your library. Until the end of your next turn, you may play those cards.

({T}: Add {G} or {W}.)

Canopy Vista enters the battlefield tapped unless you control two or more basic lands.

Whenever Caparocti Sunborn attacks, you may tap two untapped artifacts and/or creatures you control. If you do, discover 3. (Exile cards from the top of your library until you exile a nonland card with mana value 3 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

({T}: Add {R} or {G}.)

Cinder Glade enters the battlefield tapped unless you control two or more basic lands.

When Clay-Fired Bricks enters the battlefield, search your library for a basic Plains card, reveal it, put it into your hand, then shuffle. You gain 2 life.

Craft with artifact {5}{W}{W} ({5}{W}{W}, Exile this artifact, Exile another artifact you control or an artifact card from your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery.)

When Cosmium Kiln enters the battlefield, create two 1/1 colorless Gnome artifact creature tokens.

Creatures you control get +1/+1.

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

Choose target permanent card in your graveyard. If it has mana value 3 or less, you may put it onto the battlefield. If you don't put it onto the battlefield, put it into your hand.

You gain 3 life.

Whenever you discover, discover again for the same value. This ability triggers only once each turn.

Up to three target creatures can't block this turn.

Discover 4. (Exile cards from the top of your library until you exile a nonland card with mana value 4 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

Exile the top three cards of your library. You may play those cards until end of turn. Put four time counters on each of those cards that has suspend.

Suspend 4--{R}

Each opponent faces a villainous choice -- They exile cards from the top of their library until they exile a nonland card, then you may cast that card without paying its mana cost, or that player exiles the top four cards of their library and Ensnared by the Mara deals damage equal to the total mana value of those exiled cards to that player.

{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}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

As Fortified Village enters the battlefield, you may reveal a Forest or Plains card from your hand. If you don't, Fortified Village enters the battlefield tapped.

{T}: Add {G} or {W}.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I -- Create a 1/1 white Human creature token with ward {2} and a 4/4 white Alien Rhino creature token.

II -- Investigate.

III -- You may exile a Human you control and an artifact you control. If you do, search your library for a Doctor card, put it onto the battlefield, then shuffle.

As Furycalm Snarl enters the battlefield, you may reveal a Mountain or Plains card from your hand. If you don't, Furycalm Snarl enters the battlefield tapped.

{T}: Add {R} or {W}.

As Game Trail enters the battlefield, you may reveal a Mountain or Forest card from your hand. If you don't, Game Trail enters the battlefield tapped.

{T}: Add {R} or {G}.

When Garruk's Uprising enters the battlefield, if you control a creature with power 4 or greater, draw a card.

Creatures you control have trample. (They can deal excess combat damage to the player or planeswalker they're attacking.)

Whenever a creature with power 4 or greater enters the battlefield under your control, draw a card.

When Geological Appraiser enters the battlefield, if you cast it, discover 3. (Exile cards from the top of your library until you exile a nonland card with mana value 3 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

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.)

When Ground Seal enters the battlefield, draw a card.

Cards in graveyards can't be the targets of spells or abilities.

Hidden Nursery enters the battlefield tapped.

{T}: Add {G}.

{4}{G}, {T}, Sacrifice Hidden Nursery: Discover 4. Activate only as a sorcery. (Exile cards from the top of your library until you exile a nonland card with mana value 4 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

Hidden Volcano enters the battlefield tapped.

{T}: Add {R}.

{4}{R}, {T}, Sacrifice Hidden Volcano: Discover 4. Activate only as a sorcery. (Exile cards from the top of your library until you exile a nonland card with mana value 4 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

Discover 10. If the discovered card's mana value is less than 10, create a number of tapped Treasure tokens equal to the difference. (To discover 10, exile cards from the top of your library until you exile a nonland card with mana value 10 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

{T}, Pay 1 life: Add {G} or {W}.

{1}, {T}, Sacrifice Horizon Canopy: Draw a card.

Flash

When Idol of the Deep King enters the battlefield, it deals 2 damage to any target.

Craft with artifact {2}{R} ({2}{R}, Exile this artifact, Exile another artifact you control or an artifact card from your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery.)

When Sovereign's Macuahuitl enters the battlefield, attach it to target creature you control.

Equipped creature gets +2/+0.

Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

When Imodane's Recruiter enters the battlefield, creatures you control get +1/+0 and gain haste until end of turn.

---

Create two 2/2 white Knight creature tokens with vigilance. (Then exile this card. You may cast the creature later from exile.)

Whenever a creature enters the battlefield under your control, Impact Tremors deals 1 damage to each opponent.

Creature tokens you control get +1/+1 and have vigilance.

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

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.)

Whenever Intrepid Trufflesnout attacks alone, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.")

---

Target creature gets +2/+2 until end of turn. (Then exile this card. You may cast the creature later from exile.)

Trample

Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.)

Paradox -- Whenever you cast a spell from anywhere other than your hand, create a 2/2 red Alien Warrior creature token.

Vigilance, trample, haste

Whenever Karvanista attacks, put a +1/+1 counter on each Human you control.

---

Humans you control gain indestructible until your next turn. (Then exile this card. You may cast the creature later from exile.)

Whenever Kellan, Daring Traveler attacks, reveal the top card of your library. If it's a creature card with mana value 3 or less, put it into your hand. Otherwise, you may put it into your graveyard.

---

Create X Map tokens, where X is one plus the number of opponents who control an artifact. (Then exile this card. You may cast the creature later from exile.)

{T}, Discard a card: Up to one target creature can't be blocked this turn.

Whenever Key to the City becomes untapped, you may pay {2}. If you do, draw a card.

Enchant creature

When Knightly Valor enters the battlefield, create a 2/2 white Knight creature token with vigilance. (Attacking doesn't cause it to tap.)

Enchanted creature gets +2/+2 and has vigilance.

Flying, vigilance

You have hexproof.

Whenever Metropolis Reformer is dealt damage, you gain that much life.

{T}: Add {C}.

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

({T}: Add {R}.)

({T}: Add {R}.)

Myriad Landscape enters the battlefield tapped.

{T}: Add {C}.

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

Creatures you control get +1/+0 and have haste.

At the beginning of your end step, exile any number of nontoken artifacts and/or creatures you control. Return those cards to the battlefield under their owner's control at the beginning of your next upkeep.

When Night of the Sweets' Revenge enters the battlefield, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.")

Foods you control have "{T}: Add {G}."

{5}{G}{G}, Sacrifice Night of the Sweets' Revenge: Creatures you control get +X/+X until end of turn, where X is the number of Foods you control. Activate only as a sorcery.

{T}: Add {C}.

{5}, {T}, Exile Ominous Cemetery: Target creature's owner shuffles it into their library.

X can't be greater than the number of players in the game.

Reveal cards from the top of your library until you reveal X land cards. Put those land cards onto the battlefield tapped and the rest on the bottom of your library in a random order.

When Oteclan Landmark enters the battlefield, scry 2.

Craft with artifact {2}{W} ({2}{W}, Exile this artifact, Exile another artifact you control or an artifact card from your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery.)

Flying

Whenever Oteclan Levitator attacks, target attacking creature without flying gains flying until end of turn.

Overgrown Farmland enters the battlefield tapped unless you control two or more other lands.

{T}: Add {G} or {W}.

Thopters you control have haste.

Whenever you play a land from exile or cast a spell from exile, create a 1/1 colorless Thopter artifact creature token with flying.

({T}: Add {W}.)

({T}: Add {W}.)

When Provisions Merchant enters the battlefield, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.")

Whenever Provisions Merchant attacks, you may sacrifice a Food. If you do, attacking creatures get +1/+1 and gain trample until end of turn.

Whenever you cast a spell that's white, blue, black, or red, put a +1/+1 counter on Questing Druid.

---

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

Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

As long as it's your turn, Ratcatcher Trainee has first strike.

---

Create two 1/1 black Rat creature tokens with "This creature can't block." (Then exile this card. You may cast the creature later from exile.)

Imprint -- Whenever a player casts an instant or sorcery spell from their hand, exile it instead of putting it into a graveyard as it resolves.

At the beginning of your upkeep, if there are four or more cards exiled with River Song's Diary, choose one of them at random. You may cast it without paying its mana cost.

At the beginning of your end step, each player exiles the top card of their library. Until your next end step, each player may play the card they exiled this way.

Whenever a player plays a land from exile or casts a spell from exile, you put a +1/+1 counter on target creature and create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.")

Rockfall Vale enters the battlefield tapped unless you control two or more other lands.

{T}: Add {R} or {G}.

{T}: Add {C}.

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

Rootbound Crag enters the battlefield tapped unless you control a Mountain or a Forest.

{T}: Add {R} or {G}.

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.)

Whenever a creature enters the battlefield under your control, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Whenever you cast a spell that targets a creature you control, draw a card.

Trample, haste

Share Intelligence -- Whenever Sergeant John Benton deals combat damage to a player, you and that player each draw that many cards.

Flying

Other permanents you control have hexproof.

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

You may cast Angel spells and Human spells from the top of your library.

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

When Spark Rupture enters the battlefield, draw a card.

Each planeswalker with one or more loyalty counters on it loses all abilities and is a creature with power and toughness each equal to the number of loyalty counters on it.

Flash

When Spring-Loaded Sawblades enters the battlefield, it deals 5 damage to target tapped creature an opponent controls.

Craft with artifact {3}{W} ({3}{W}, Exile this artifact, Exile another artifact you control or an artifact card from your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery.)

Tap two other untapped artifacts you control: Bladewheel Chariot becomes an artifact creature until end of turn.

Crew 1 (Tap any number of creatures you control with total power 1 or more: This Vehicle becomes an artifact creature until end of turn.)

Vigilance, trample

Grenades! -- {2}, {T}, Sacrifice an artifact: Choose a player at random. When you do, Strax fights another target creature that player controls.

Glory of Battle -- Whenever Strax deals damage to a creature, put a +1/+1 counter on Strax.

Sundown Pass enters the battlefield tapped unless you control two or more other lands.

{T}: Add {R} or {W}.

{1}, {T}: Add {G}{W}.

Equipped creature has reach, "{2}, {T}: Tap target artifact or creature," and "{8}, {T}: Discover 10." (Exile cards from the top of your library until you exile a nonland card with mana value 10 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

Equip {1}

Flying

Whenever TARDIS attacks, if you control a Time Lord, the next spell you cast this turn has cascade and you may planeswalk.

Crew 2 (Tap any number of creatures you control with total power 2 or more: This Vehicle becomes an artifact creature until end of turn.)

Temple of Abandon enters the battlefield tapped.

When Temple of Abandon enters the battlefield, scry 1.

{T}: Add {R} or {G}.

Temple of Plenty enters the battlefield tapped.

When Temple of Plenty enters the battlefield, scry 1.

{T}: Add {G} or {W}.

Temple of Triumph enters the battlefield tapped.

When Temple of Triumph enters the battlefield, scry 1.

{T}: Add {R} or {W}.

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

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

The Foretold Soldier must be blocked if able.

The Foretold Soldier can't be blocked by more than one creature.

Whenever The Foretold Soldier deals damage, exile it face down. It becomes foretold.

Foretell {1}{G} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Whenever one or more other permanents phase out and whenever one or more other cards are put into exile from anywhere, put a time counter on The War Doctor.

Whenever The War Doctor attacks, it deals damage equal to the number of time counters on it to any target. If a creature dealt damage this way would die this turn, exile it instead.

{T}: Add {C}.

{2}, {T}: Thespian's Stage becomes a copy of target land, except it has this ability.

Thriving Bluff enters the battlefield tapped.

As Thriving Bluff enters the battlefield, choose a color other than red.

{T}: Add {R} or one mana of the chosen color.

Thriving Grove enters the battlefield tapped.

As Thriving Grove enters the battlefield, choose a color other than green.

{T}: Add {G} or one mana of the chosen color.

Thriving Heath enters the battlefield tapped.

As Thriving Heath enters the battlefield, choose a color other than white.

{T}: Add {W} or one mana of the chosen color.

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order.)

Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.)

Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.)

When Troublemaker Ouphe enters the battlefield, if it was bargained, exile target artifact or enchantment an opponent controls.

Trample

When Trumpeting Carnosaur enters the battlefield, discover 5.

{2}{R}, Discard Trumpeting Carnosaur: It deals 3 damage to target creature or planeswalker.

Undergrowth -- Distribute X +1/+1 counters among any number of target creatures you control, where X is the number of creature cards in your graveyard as you cast this spell. Creatures you control gain vigilance until end of turn.

Flying

Vrestin enters the battlefield with X +1/+1 counters on it.

When Vrestin enters the battlefield, create X 1/1 green and white Alien Insect creature tokens with flying.

Whenever you attack with one or more Insects, put a +1/+1 counter on each of them.

Return up to one target permanent card from your graveyard to your hand. Discover 4. (Exile cards from the top of your library until you exile a nonland card with mana value 4 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I -- Create a 1/1 white Human creature token.

II -- Create a Food token.

III -- Put X +1/+1 counters on target creature you control, where X is one plus the number of Foods you control.

{T}: Exile the top card of your library. Until your next end step, you may play it.

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