Many interstellar civilizations have dumped their unwanted elements on Planet Morbus, from toxins to lowlifes.

Ash Barrens

{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.)

"A hamster sumo wrestler? Snot that's also a crime lord? An alien newt assassin? April, how am I supposed to edit all of this footage into something watchable, much less believable?"
—Irma Langenstein

Evolving Wilds

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

Command Tower

Tower Winder

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

Opal Palace

{T}: Add {C}.
{1}, {T}: Add one mana of any color in your commander's color identity. If you spend this mana to cast your commander, it enters with a number of additional +1/+1 counters on it equal to the number of times it's been cast from the command zone this game.

Path of Ancestry

This land enters tapped.
{T}: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Once guarded by the Knights of the Reliquary, the tower stands now protected only by its own remoteness, its dusty treasures open to plunder by anyone.

Reliquary Tower

You have no maximum hand size.
{T}: Add {C}.

"The Caribbean in 1530? Rad! Pirates are totally cold! Is that what you say in your time? Or tepid? Cool? Anyway, the Time Scepter says Bebop and Rocksteady should be here somewhere."
—Renet

Sunken Hollow

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

"Log 2.9.089: Lammuat, the cemetery moon of salvage and secrets. Could be profitable for those brave enough to plumb its recesses."
—*Maisie's Edge Chronicles*

Watery Grave

({T}: Add {U} or {B}.)
As this land enters, you may pay 2 life. If you don't, it enters tapped.

A warped gateway that seeps toxins and malevolence into the waters around Towashi.

Polluted Delta

{T}, Pay 1 life, Sacrifice this land: Search your library for an Island or Swamp card, put it onto the battlefield, then shuffle.

None can tell how many vessels are tangled up on the sea floor—or how much treasure remains unclaimed.

Drowned Catacomb

This land enters tapped unless you control an Island or a Swamp.
{T}: Add {U} or {B}.

Choked Estuary

As this land enters, you may reveal an Island or Swamp card from your hand. If you don't, this land enters tapped.
{T}: Add {U} or {B}.

"The war polluted the land, turning what had once been fruitful fields into fetid morasses of mud and rusted corpses."
—*The Antiquities War*

Underground River

{T}: Add {C}.
{T}: Add {U} or {B}. This land deals 1 damage to you.

Tainted Isle

{T}: Add {C}.
{T}: Add {U} or {B}. Activate only if you control a Swamp.

Without the care of the tideshapers, the Lanes lie neglected. Some have flooded entire towns; others dried to cracked mud.

Sunken Ruins

{T}: Add {C}.
{U/B}, {T}: Add {U}{U}, {U}{B}, or {B}{B}.

Unclaimed Territory

As this land enters, choose a creature type.
{T}: Add {C}.
{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type.

"Long after the land has given up the last of its secrets, there will still be mysteries in the depths of the sea."
—Kiora

Submerged Boneyard

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

Dimir Aqueduct

This land enters tapped.
When this land enters, return a land you control to its owner's hand.
{T}: Add {U}{B}.

Enter and become a mastermind of spies, lies, and deception.

Dimir Guildgate

Desert of the Glorified

This land enters tapped.
{T}: Add {B}.
Cycling {1}{B} ({1}{B}, Discard this card: Draw a card.)

Desert of the Mindful

This land enters tapped.
{T}: Add {U}.
Cycling {1}{U} ({1}{U}, Discard this card: Draw a card.)

Mortuary Mire

This land enters tapped.
When this land enters, you may put target creature card from your graveyard on top of your library.
{T}: Add {B}.

"I ask only that the winds return you to me as swiftly as they bear you and the Storm Crane away."
—Samthar, Sultai merchant, to Jialing, Jeskai monk

Dismal Backwater

This land enters tapped.
When this land enters, you gain 1 life.
{T}: Add {U} or {B}.

Swamp

Island

Merchant Ship

This creature can't attack unless defending player controls an Island.
Whenever this creature attacks and isn't blocked, you gain 2 life.
When you control no Islands, sacrifice this creature.

Seasinger

When you control no Islands, sacrifice this creature.
You may choose not to untap this creature during your untap step.
{T}: Gain control of target creature whose controller controls an Island for as long as you control this creature and this creature remains tapped.

Phylactery Lich

Indestructible
As this creature enters, put a phylactery counter on an artifact you control.
When you control no permanents with phylactery counters on them, sacrifice this creature.

Morph

Slipstream Serpent

This creature can't attack unless defending player controls an Island.
When you control no Islands, sacrifice this creature.
Morph {5}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Marjhan

This creature doesn't untap during your untap step.
{U}{U}, Sacrifice a creature: Untap this creature. Activate only during your upkeep.
This creature can't attack unless defending player controls an Island.
{U}{U}: This creature gets -1/-0 until end of turn and deals 1 damage to target attacking creature without flying.
When you control no Islands, sacrifice this creature.

Kukemssa Serpent

This creature can't attack unless defending player controls an Island.
{U}, Sacrifice an Island: Target land an opponent controls becomes an Island until end of turn.
When you control no Islands, sacrifice this creature.

"We thought it was a fallen tree trunk. Then it ate Snod."
—Sneed, goblin barkwright

Bog Serpent

This creature can't attack unless defending player controls a Swamp.
When you control no Swamps, sacrifice this creature.

Manta Ray

This creature can't attack unless defending player controls an Island.
This creature can't be blocked except by blue creatures.
When you control no Islands, sacrifice this creature.

Legend has it that Serpents used to be bigger, but how could that be?

Sea Serpent

This creature can't attack unless defending player controls an Island.
When you control no Islands, sacrifice this creature.

Fear the knight leaping from the water into the air, weapon ready.

Vodalian Knights

First strike
This creature can't attack unless defending player controls an Island.
When you control no Islands, sacrifice this creature.
{U}: This creature gains flying until end of turn.

An emblem of a secret guild, the Dimir insignia is seen only by its own members—and the doomed.

Dimir Signet

Talisman of Dominance

{T}: Add {C}.
{T}: Add {U} or {B}. This artifact deals 1 damage to you.

"What drives the star arches to appear, and what causes them to sometimes disappear? I doubt even the Dawning Archaic knows."
—Jadzi, Oracle of Arcavios

Sol Ring

Each Strixhaven graduate receives a class ring bearing the university's motto: "Through study, know the world; through magic, know yourself."

Arcane Signet

Dimir Keyrune

{T}: Add {U} or {B}.
{U}{B}: This artifact becomes a 2/2 blue and black Horror artifact creature until end of turn and can't be blocked this turn.

"We have barely begun to learn the secrets of the Fourth People. Every remnant of their presence, however cryptic, is a gift."
—Akal Pakal, First Steward of Oteclan

Mind Stone

{T}: Add {C}.
{1}, {T}, Sacrifice this artifact: Draw a card.

Infinite possibilities contained in a finite space.

Thought Vessel

It harmonizes with the essence of its master.

Commander's Sphere

{T}: Add one mana of any color in your commander's color identity.
Sacrifice this artifact: Draw a card.

Swiftfoot Boots

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control. It can attack and {T} no matter when it came under your control.)
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

When you spend most of your time running for your life, it pays to invest in quality footwear.

Lightning Greaves

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

Such cloaks are in high demand both by assassins and by those who fear them.

Whispersilk Cloak

Equipped creature can't be blocked and has shroud. (It can't be the target of spells or abilities.)
Equip {2}

Arcane Denial

Counter target spell. Its controller may draw up to two cards at the beginning of the next turn's upkeep.
You draw a card at the beginning of the next turn's upkeep.

Counterspell

"You guys seriously try to do this with jump kicks?"

Negate

Swan Song

Bird

In the end, the dying Illvoi clung to neither secrecy nor protocol. She cloudsculpted wings that she might live on in a spark of creativity.

Counter target enchantment, instant, or sorcery spell. Its controller creates a 2/2 blue Bird creature token with flying.

The student searches the world for meaning. The master finds worlds of meaning in the search.

Mystical Tutor

Search your library for an instant or sorcery card, reveal it, then shuffle and put that card on top.

The mizzium-sphere array drove her mind deep into the thought field, where only the rarest motes of genius may be plucked.

Brainstorm

Draw three cards, then put two cards from your hand on top of your library in any order.

Ponder

Preponderant Pearl

Tomorrow belongs to those who prepare for it today.

Look at the top three cards of your library, then put them back in any order. You may shuffle.
Draw a card.

Preordain

Scry 2, then draw a card. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

"It's easy to anticipate Captain Storm's orders: take the more dangerous route."

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

Serum Visions

While other pirates prowl for treasure, Captain Parrish plunders secrets.

Chart a Course

Draw two cards. Then discard a card unless you attacked this turn.

Countless delights drift on the surface while dark schemes run below.

Treasure Cruise

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)
Draw three cards.

"Slimefoot, I know I said I wanted to grow our repository of knowledge, but this isn't what I had in mind."

Fact or Fiction

Reveal the top five cards of your library. An opponent separates those cards into two piles. Put one pile into your hand and the other into your graveyard.

Dig Through Time

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)
Look at the top seven cards of your library. Put two of them into your hand and the rest on the bottom of your library in any order.

Windfall

Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.

Whispering Madness

Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.
Cipher (Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.)

Those wound tightest are first to unravel.

Fraying Sanity

Enchant player
At the beginning of each end step, enchanted player mills X cards, where X is the number of cards put into their graveyard from anywhere this turn.

"To break another's mind is to deliver a fate worse than death. It is a terrifying power."
—Jace Beleren

Psychic Corrosion

Whenever you draw a card, each opponent mills two cards.

With the Izzet occupied elsewhere, many of their public works fell into disrepair.

Chronic Flooding

Enchant land
Whenever enchanted land becomes tapped, its controller mills three cards.

Animate Dead

Enchant creature card in a graveyard
When this Aura enters, if it's on the battlefield, it loses "enchant creature card in a graveyard" and gains "enchant creature put onto the battlefield with this Aura." Return enchanted creature card to the battlefield under your control and attach this Aura to it. When this Aura leaves the battlefield, that creature's controller sacrifices it.
Enchanted creature gets -1/-0.

"Sleep now, brother. That is the one gift I can give you."
—Liliana Vess

Final Parting

Search your library for two cards. Put one into your hand and the other into your graveyard. Then shuffle.

"You'd better be worth it."
—Liliana Vess

Reanimate

Put target creature card from a graveyard onto the battlefield under your control. You lose life equal to that card's mana value.

"Die. But die knowing that your pathetic life will yield a great bounty for me."
—Zul Ashur, lich lord

Victimize

Choose two target creature cards in your graveyard. Sacrifice a creature. If you do, return the chosen cards to the battlefield tapped.

Living Death

Each player exiles all creature cards from their graveyard, then sacrifices all creatures they control, then puts all cards they exiled this way onto the battlefield.

Mnemonic Betrayal

Exile all opponents' graveyards. You may cast spells from among those cards this turn, and mana of any type can be spent to cast them. At the beginning of the next end step, if any of those cards remain exiled, return them to their owners' graveyards.
Exile Mnemonic Betrayal.

"Death is no excuse for disobedience."
—Liliana Vess

Rise from the Grave

Put target creature card from a graveyard onto the battlefield under your control. That creature is a black Zombie in addition to its other colors and types.

"The light of my master's guidance traverses all boundaries, even those separating life and death."

Beacon of Unrest

Put target artifact or creature card from a graveyard onto the battlefield under your control. Shuffle Beacon of Unrest into its owner's library.

Blatant Thievery

For each opponent, gain control of target permanent that player controls.

"It seems your ticket is in order after all, ma'am."

Bribery

Search target opponent's library for a creature card and put that card onto the battlefield under your control. Then that player shuffles.

Beneath Ravnica's streets runs a layer of tunnels, then caverns and waterways, then terrors and nightmares.

Drowned Secrets

Whenever you cast a blue spell, target player mills two cards.

"You should try to clear your mind of idle thoughts. And if you can't, I will."

Jace's Erasure

Whenever you draw a card, you may have target player mill a card.

"You've never considered the implications of dealing with another telepath, Jace."

Sphinx's Tutelage

Whenever you draw a card, target opponent mills two cards. If two nonland cards that share a color were milled this way, repeat this process.
{5}{U}: Draw a card, then discard a card.

"This is a sacred duty. Master Beleren's trust has bought an eternity of my loyalty."

Jace's Archivist

{U}, {T}: Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.

As it spins, dead voices shriek in an ever-increasing cacophony, rending the mind asunder.

Keening Stone

{5}, {T}: Target player mills X cards, where X is the number of cards in that player's graveyard.

Mind Grind

Each opponent reveals cards from the top of their library until they reveal X land cards, then puts all cards revealed this way into their graveyard. X can't be 0.

Consuming Aberration

Consuming Aberration's power and toughness are each equal to the number of cards in your opponents' graveyards.
Whenever you cast a spell, each opponent reveals cards from the top of their library until they reveal a land card, then puts those cards into their graveyard.

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