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.)

Flying

, Sacrifice another artifact: Aerial Toastmaster assembles a Contraption. (Put the top card of your Contraption deck face up onto one of your sprockets.)

+2: Put a +1/+1 counter on each Cat you control.

0: Create a 2/1 white Cat Warrior creature token. When you do, if you control a red permanent other than Ajani, Nacatl Avenger, he deals damage equal to the number of creatures you control to any target.

−4: Each opponent chooses an artifact, a creature, an enchantment, and a planeswalker from among the nonland permanents they control, then sacrifices the rest.

(Gain the next level as a sorcery to add its ability.)

When Alchemist's Talent enters, create two tapped Treasure tokens.

: Level 2

//Level_2//

Treasures you control have ", Sacrifice this artifact: Add two mana of any one color."

: Level 3

//Level_3//

Whenever you cast a spell, if mana from a Treasure was spent to cast it, this Class deals damage equal to that spell's mana value to each opponent.

Counter target noncreature spell. Its controller creates two Treasure tokens. (They're artifacts with ", Sacrifice this artifact: Add one mana of any color.")

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.

Flying

Whenever another permanent you control leaves the battlefield, if it had counters on it, investigate. (Create a colorless Clue artifact token with ", Sacrifice this artifact: Draw a card.")

Whenever Anje, Maid of Dishonor and/or one or more other Vampires you control enter, create a Blood token. This ability triggers only once each turn. (It's an artifact with ", , Discard a card, Sacrifice this artifact: Draw a card.")

, Sacrifice another creature or a Blood token: Each opponent loses 2 life and you gain 2 life.

Antique Collector can't be blocked by creatures with power 2 or less.

When Antique Collector enters the battlefield, creatures you control perpetually gain "When this creature dies, you may shuffle it into its owner's library if it's in your graveyard. If you do, investigate." (Create a colorless Clue artifact token with ", Sacrifice this artifact: Draw a card.")

Sacrifice an artifact: Put a +1/+1 counter on Arcbound Ravager.

Modular 1 (This creature enters with a +1/+1 counter on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

When Armed with Proof enters, investigate twice. (To investigate, create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

Clues you control are Equipment in addition to their other types and have "Equipped creature gets +2/+0" and equip .

When Arterial Alchemy enters, create a Blood token for each opponent you have. (It's an artifact with ", , Discard a card, Sacrifice this artifact: Draw a card.")

Blood tokens you control are Equipment in addition to their other types and have "Equipped creature gets +2/+0" and equip .

The first nonlegendary artifact spell you cast each turn has casualty 2. (As you cast it, you may sacrifice a creature with power 2 or greater. When you do, copy it. A copy of an artifact spell becomes a token.)

Whenever you sacrifice another creature, put a +1/+1 counter on Ashad, the Lone Cyberman.

Deathtouch

Whenever Ashnod, Flesh Mechanist attacks, you may sacrifice another creature. If you do, create a tapped Powerstone token.

, Exile a creature card from your graveyard: Create a tapped 3/3 colorless Zombie artifact creature token.

Sacrifice an artifact: Atog gets +2/+2 until end of turn.

Artifact and enchantment spells your opponents cast cost more to cast.

Sacrifice Aura of Silence: Destroy target artifact or enchantment.

Whenever one or more +1/+1 counters are put on Axgard Artisan for the first time each turn, create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

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

Return up to two target creature cards from your graveyard to your hand. If this spell was bargained, you may put one of those cards with mana value 4 or less onto the battlefield instead of putting it into your hand.

Destroy target creature. Create a Food token. (It's an artifact with ", , Sacrifice this artifact: You gain 3 life.")

Ballroom enters tapped.

: Add or .

, : Investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

Whenever one or more tokens you control enter, create a 1/1 black Vampire Rogue creature token with lifelink. This ability triggers only once each turn.

, Sacrifice another creature or artifact: Draw a card.

When Bartered Cow dies or when you discard it, create a Food token. (It's an artifact with ", , Sacrifice this artifact: You gain 3 life.")

Basalt Golem can't be blocked by artifact creatures.

Whenever Basalt Golem becomes blocked by a creature, that creature's controller sacrifices it at end of combat. If the player does, they create a 0/2 colorless Wall artifact creature token with defender.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Whenever Bearer of Overwhelming Truths deals combat damage to a player, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

Whenever Benthic Criminologists enters or attacks, you may sacrifice an artifact. If you do, draw a card.

As an additional cost to cast this spell, discard a card.

Draw two cards and create two Treasure tokens. (They're artifacts with ", Sacrifice this artifact: Add one mana of any color.")

When Bill the Pony enters, create two Food tokens. (They're artifacts with ", , Sacrifice this artifact: You gain 3 life.")

Sacrifice a Food: Until end of turn, target creature you control assigns combat damage equal to its toughness rather than its power.

Artifact offering (You may cast this spell as thought it had flash by sacrificing an artifact and paying the difference in mana costs between this and the sacrificed artifact. Mana cost includes color.)

Flying, double strike

Creatures attacking your opponents have double strike.

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

I, III — Choose target creature. Its owner shuffles it into their library, then investigates. (They create a Clue token.)

II, IV — Create a 2/2 black Alien Angel artifact creature token with first strike, vigilance, and "Whenever an opponent casts a creature spell, this permanent isn't a creature until end of turn."

When Blood Fountain enters, create a Blood token. (It's an artifact with ", , Discard a card, Sacrifice this artifact: Draw a card.")

, , Sacrifice Blood Fountain: Return up to two target creature cards from your graveyard to your hand.

When Blood Servitor enters, create a Blood token. (It's an artifact with ", , Discard a card, Sacrifice this artifact: Draw a card.")

Menace

When Bloodcrazed Socialite enters, create a Blood token. (It's an artifact with ", , Discard a card, Sacrifice this artifact: Draw a card.")

Whenever Bloodcrazed Socialite attacks, you may sacrifice a Blood token. If you do, it gets +2/+2 until end of turn.

When Bloodtithe Harvester enters, create a Blood token. (It's an artifact with ", , Discard a card, Sacrifice this artifact: Draw a card.")

, Sacrifice Bloodtithe Harvester: Target creature gets -X/-X until end of turn, where X is twice the number of Blood tokens you control. Activate only as a sorcery.

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. Create a Blood token. (It's an artifact with ", , Discard a card, Sacrifice this artifact: Draw a card.")

, , Sacrifice Boom Box: Destroy up to one target artifact, up to one target creature, and up to one target land.

Trample

, Sacrifice an artifact: Bosh, Iron Golem deals damage equal to the sacrificed artifact's mana value to any target.

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for .)

Bottle-Cap Blast deals 5 damage to any target. If excess damage was dealt to a permanent this way, create that many tapped Treasure tokens. (They're artifacts with ", Sacrifice this artifact: Add one mana of any color.")

Vigilance

, Sacrifice Bounty Agent: Destroy target legendary permanent that's an artifact, creature, or enchantment.

At the beginning of your end step, you may sacrifice an artifact, creature, enchantment, land, or planeswalker. If you do, each opponent may sacrifice a permanent that shares a card type with it. For each opponent who doesn't, that player loses 2 life and you draw a card.

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Sacrifice Brain Weevil: Target player discards two cards. Activate only as a sorcery.

For each land you control, create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

When Brazen Freebooter enters, create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

Menace

Whenever you cast your second spell each turn, you may sacrifice an artifact. If you do, flip a coin. When you win the flip, copy that spell. You may choose new targets for the copy. When you lose the flip, Breeches, the Blastmaker deals damage equal to that spell's mana value to any target.

When Breya, Etherium Shaper enters, create two 1/1 blue Thopter artifact creature tokens with flying.

, Sacrifice two artifacts: Choose one —

• Breya deals 3 damage to target player or planeswalker.

• Target creature gets -4/-4 until end of turn.

• You gain 5 life.

Whenever Briarbridge Patrol deals damage to one or more creatures, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

At the beginning of each end step, if you sacrificed three or more Clues this turn, you may put a creature card from your hand onto the battlefield.

Trample

When Bristlebud Farmer enters, create two Food tokens. (They're artifacts with ", , Sacrifice this artifact: You gain 3 life.")

Whenever Bristlebud Farmer attacks, you may sacrifice a Food. If you do, mill three cards. You may put a permanent card from among them into your hand.

Destroy target nonartifact attacking creature. It can't be regenerated. Create a black Spirit creature token. Its power is equal to that creature's power and its toughness is equal to that creature's toughness. Sacrifice the token at the beginning of the next end step.

When Bumbleflower's Sharepot enters, create a Food token. (It's an artifact with ", , Sacrifice this artifact: You gain 3 life.")

, , Sacrifice Bumbleflower's Sharepot: Destroy target nonland permanent. Activate only as a sorcery.

: Add .

, , Sacrifice Buried Ruin: Return target artifact card from your graveyard to your hand.

Exile target nonland permanent. Its controller creates a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")