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

Sacrifice a creature: Add {C}{C}.

You may play lands from your graveyard.

{T}: Add one mana of any color that a land an opponent controls could produce.

Activated abilities of creatures cost {1} less to activate. This effect can't reduce the mana in that cost to less than one mana.

Whenever an ability of equipped creature is activated, if it isn't a mana ability, copy that ability. You may choose new targets for the copy. Equip {3}

Whenever a creature you control dies, put two eyeball counters on Jar of Eyeballs. {3}, {T}, Remove all eyeball counters from Jar of Eyeballs: Look at the top X cards of your library, where X is the number of eyeball counters removed this way. Put one of them into your hand and the rest on the bottom of your library in any order.

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

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

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

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

At the beginning of each player's draw step, that player puts the cards in their hand on the bottom of their library in any order, then draws that many cards.

{T}: Put target permanent you own on the bottom of your library.

This spell costs {2} less to cast for each creature card in your graveyard. Whenever a creature you control dies, put it on the bottom of its owner's library. {2}{B}, {T}, Pay 2 life: Return target creature card from your graveyard to the battlefield. Activate only as a sorcery.

Minion creatures get +1/+1. {B}{B}{B}, Exile Balthor the Defiled: Each player returns all black and all red creature cards from their graveyard to the battlefield.

Flying When Balustrade Spy enters the battlefield, target player reveals cards from the top of their library until they reveal a land card, then puts those cards into their graveyard.

Carrion Feeder can't block. Sacrifice a creature: Put a +1/+1 counter on Carrion Feeder.

Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.) Whenever you tap a Swamp for mana, add an additional {B}.

{1}{B}, Sacrifice an artifact or creature: Draw a card.

{B}, {T}, Sacrifice Doomed Necromancer: Return target creature card from your graveyard to the battlefield.

Imprint — When Duplicant enters the battlefield, you may exile target nontoken creature. As long as a card exiled with Duplicant is a creature card, Duplicant has the power, toughness, and creature types of the last creature card exiled with Duplicant. It's still a Shapeshifter.

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

When Goblin Engineer enters the battlefield, you may search your library for an artifact card, put it into your graveyard, then shuffle. {R}, {T}, Sacrifice an artifact: Return target artifact card with mana value 3 or less from your graveyard to the battlefield.

Deathtouch When Gonti, Lord of Luxury enters the battlefield, look at the top four cards of target opponent's library, exile one of them face down, then put the rest on the bottom of that library in a random order. You may cast that card for as long as it remains exiled, and mana of any type can be spent to cast it.

{R}: Creatures you control gain haste until end of turn. {3}{R}{R}: Create a 5/5 red Dragon Spirit creature token with flying. Activate only if you control an attacking modified creature. (Equipment, Auras you control, and counters are modifications.)

When Gray Merchant of Asphodel enters the battlefield, each opponent loses X life, where X is your devotion to black. You gain life equal to the life lost this way. (Each {B} in the mana costs of permanents you control counts toward your devotion to black.)

Morph {B} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) Whenever another nontoken creature you control dies, draw a card.

{T}, Sacrifice a creature: Return target creature card from your graveyard to the battlefield. Activate only during your upkeep.

Flying Cumulative upkeep—Gain control of a land you don't control. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) Herald of Leshrac gets +1/+1 for each land you control but don't own. When Herald of Leshrac leaves the battlefield, each player gains control of each land they own that you control.

Ignition Team enters the battlefield with X +1/+1 counters on it, where X is the number of tapped lands on the battlefield. {2}{R}, Remove a +1/+1 counter from Ignition Team: Target land becomes a 4/4 red Elemental creature until end of turn. It's still a land.

When Ingot Chewer enters the battlefield, destroy target artifact. Evoke {R} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)

Whenever you sacrifice a permanent, put a +1/+1 counter on Juri, Master of the Revue. When Juri dies, it deals damage equal to its power to any target.

When Meteor Golem enters the battlefield, destroy target nonland permanent an opponent controls.

First strike When Nekrataal enters the battlefield, destroy target nonartifact, nonblack creature. That creature can't be regenerated.

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

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

Whenever another creature you control dies, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

When Plundering Barbarian enters the battlefield, choose one — • Smash the Chest — Destroy target artifact. • Pry It Open — Create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

When Priest of Gix enters the battlefield, add {B}{B}{B}.

When Priest of Urabrask enters the battlefield, add {R}{R}{R}.

Indestructible As long as your devotion to red is less than five, Purphoros isn't a creature. Whenever another creature enters the battlefield under your control, Purphoros deals 2 damage to each opponent. {2}{R}: Creatures you control get +1/+0 until end of turn.

When Ravenous Baboons enters the battlefield, destroy target nonbasic land.

When Ravenous Chupacabra enters the battlefield, destroy target creature an opponent controls.

Defender When Reito Sentinel enters the battlefield, target player mills three cards. (They put the top three cards of their library into their graveyard.) {3}: Put target card from a graveyard on the bottom of its owner's library.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.) When Shriekmaw enters the battlefield, destroy target nonartifact, nonblack creature. Evoke {1}{B} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)

When Solemn Simulacrum enters the battlefield, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. When Solemn Simulacrum dies, you may draw a card.

Defender {T}: Exchange target opponent's life total with Tree of Perdition's toughness.

Whenever Tuktuk Scrapper or another Ally enters the battlefield under your control, you may destroy target artifact. If that artifact is put into a graveyard this way, Tuktuk Scrapper deals damage to that artifact's controller equal to the number of Allies you control.

Sacrifice a creature: Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Workhorse enters the battlefield with four +1/+1 counters on it. Remove a +1/+1 counter from Workhorse: Add {C}.

When Young Necromancer enters the battlefield, you may exile two cards from your graveyard. When you do, return target creature card from your graveyard to the battlefield.

Whenever a creature dies, put a charge counter on Black Market. At the beginning of your precombat main phase, add {B} for each charge counter on Black Market.

Cumulative upkeep—Add {R}. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

Sacrifice a creature: Goblin Bombardment deals 1 damage to any target.

Until end of turn, target creature gains "When this creature dies, return it to the battlefield tapped under its owner's control with a +1/+1 counter on it."

Fire Prophecy deals 3 damage to target creature. You may put a card from your hand on the bottom of your library. If you do, draw a card.

({T}: Add {B} or {R}.) As Blood Crypt enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Bojuka Bog enters the battlefield tapped. When Bojuka Bog enters the battlefield, exile target player's graveyard. {T}: Add {B}.

{T}: Add {C}. {2}, {T}, Sacrifice Buried Ruin: Return target artifact card from your graveyard to your hand.

{T}: Add {C}. {T}, Sacrifice Command Beacon: Put your commander into your hand from the command zone.

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

Dragonskull Summit enters the battlefield tapped unless you control a Swamp or a Mountain. {T}: Add {B} or {R}.

{T}, Sacrifice Fabled Passage: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle. Then if you control four or more lands, untap that land.

Haunted Ridge enters the battlefield tapped unless you control two or more other lands. {T}: Add {B} or {R}.

Luxury Suite enters the battlefield tapped unless you have two or more opponents. {T}: Add {B} or {R}.

({T}: Add {R}.)

{T}: Add {C}. {T}, Sacrifice a creature: Add {B}{B}.

({T}: Add {B}.)

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

Search your library for up to three creature cards, put them into your graveyard, then shuffle.

As an additional cost to cast this spell, sacrifice a creature. Search your library for a card, put that card into your hand, then shuffle.

Destroy target creature or enchantment an opponent controls. You lose life equal to that permanent's mana value.

Choose three target creature cards in your graveyard. Return two of them at random to the battlefield and put the other on the bottom of your library.

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.

Search your library for a card, put that card into your hand, then shuffle.

Search your library for a card, put that card into your hand, discard a card at random, then shuffle.

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.

Choose one — • Into the Fire deals 2 damage to each creature, planeswalker, and battle. • Put any number of cards from your hand on the bottom of your library, then draw that many cards plus one.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Urza's Saga gains "{T}: Add {C}." II — Urza's Saga gains "{2}, {T}: Create a 0/0 colorless Construct artifact creature token with 'This creature gets +1/+1 for each artifact you control.'" III — Search your library for an artifact card with mana cost {0} or {1}, put it onto the battlefield, then shuffle.

Search your library for a card, then shuffle and put that card on top. You lose 2 life.

Volcanic Spite deals 3 damage to target creature, planeswalker, or battle. You may put a card from your hand on the bottom of your library. If you do, draw a card.