Five rivers encircle Theros, flowing with waters more ancient than the world itself.

Mana Confluence

{T}, Pay 1 life: Add one mana of any color.

Unclaimed Territory

As Unclaimed Territory 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.

Sliver

Sliver Hive

{T}: Add {C}.
{T}: Add one mana of any color. Spend this mana only to cast a Sliver spell.
{5}, {T}: Create a 1/1 colorless Sliver creature token. Activate only if you control a Sliver.

Gale stared into the pool and saw a stranger. The similarities were uncanny, but it was not him.

Reflecting Pool

{T}: Add one mana of any type that a land you control could produce.

"There is much to learn here, but few can endure the ringing of the spires."
—Nulakam the Archivist

City of Brass

Whenever City of Brass becomes tapped, it deals 1 damage to you.
{T}: Add one mana of any color.

"It's me and Gribble's special fort. None of the bad things can get us in there."
—Toby

Command Tower

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

Spirit

Forbidden Orchard

{T}: Add one mana of any color.
Whenever you tap Forbidden Orchard for mana, target opponent creates a 1/1 colorless Spirit creature token.

Some worlds possess a hidden core where life's essence constantly surges.

Mutavault

{T}: Add {C}.
{1}: Mutavault becomes a 2/2 creature with all creature types until end of turn. It's still a land.

A beacon of prosperity to some, a shadow of oppression to others.

Spire of Industry

{T}: Add {C}.
{T}, Pay 1 life: Add one mana of any color. Activate only if you control an artifact.

Crystal Vein

{T}: Add {C}.
{T}, Sacrifice Crystal Vein: Add {C}{C}.

"Here sprouted the first seedling of Argoth. Here the last tree will fall."
—Gamelen, Citanul elder

Gaea's Cradle

{T}: Add {G} for each creature you control.

Its secrets once wrought the greatest artifice ever known. Now crabs loot the rubble to decorate their shells.

Academy Ruins

{T}: Add {C}.
{1}{U}, {T}: Put target artifact card from your graveyard on top of your library.

"I gazed once into that light. Now it burns in my mind, forever denying me rest."
—Riku of Two Reflections

Command Beacon

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

Murmuring Bosk

({T}: Add {G}.)
As Murmuring Bosk enters, you may reveal a Treefolk card from your hand. If you don't, Murmuring Bosk enters tapped.
{T}: Add {W} or {B}. Murmuring Bosk deals 1 damage to you.

"The land promises nothing and keeps its promise."
—Oracle *en*-Vec

Wasteland

{T}: Add {C}.
{T}, Sacrifice Wasteland: Destroy target nonbasic land.

Unlike previous conflicts, the war between Urza and Mishra made Dominaria itself a casualty of war.

Strip Mine

{T}: Add {C}.
{T}, Sacrifice Strip Mine: Destroy target land.

"Yawgmoth's corpse is a wound in the universe. His foul blood seeps out, infecting the land with his final curse."
—Lord Windgrace

Urborg, Tomb of Yawgmoth

Each land is a Swamp in addition to its other land types.

For all its traps and defenses, Yavimaya has its havens, too.

Yavimaya Hollow

{T}: Add {C}.
{G}, {T}: Regenerate target creature.

Where water is the canvas and lava the paint.

Fiery Islet

{T}, Pay 1 life: Add {U} or {R}.
{1}, {T}, Sacrifice Fiery Islet: Draw a card.

In opulent chambers behind closed doors, dynasties are made and broken with but a few murmured words.

Luxury Suite

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

Blood Crypt

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

Watery Grave

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

Stomping Ground

({T}: Add {R} or {G}.)
As Stomping Ground enters, you may pay 2 life. If you don't, it enters tapped.

Temple Garden

({T}: Add {G} or {W}.)
As Temple Garden enters, you may pay 2 life. If you don't, it enters tapped.

Sacred Foundry

({T}: Add {R} or {W}.)
As Sacred Foundry enters, you may pay 2 life. If you don't, it enters tapped.

Breeding Pool

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

Godless Shrine

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

Steam Vents

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

Overgrown Tomb

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

Hallowed Fountain

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

Swamp

Forest

Mountain

Island

Plains

Squee had been disemboweled many times before, but never by something so stunningly beautiful.

Gemhide Sliver

All Slivers have "{T}: Add one mana of any color."

Sliver Overlord

{3}: Search your library for a Sliver card, reveal that card, put it into your hand, then shuffle.
{3}: Gain control of target Sliver. (This effect lasts indefinitely.)

Sliver Queen

{2}: Create a 1/1 colorless Sliver creature token.

"This is the source, the line unbroken since the calamity that brought such monsters to our shores."
—Hastric, Thunian scout

Sliver Hivelord

Sliver creatures you control have indestructible. (Damage and effects that say "destroy" don't destroy them.)

"It would take another apocalypse to stop the slivers now."
—Riptide Project researcher

Root Sliver

This spell can't be countered.
Sliver spells can't be countered.

"Since the last sliver arrived, even our mightiest relics splinter into shards as soon as we bring them against the hive."
—Llanach, Skyshroud ranger

Harmonic Sliver

All Slivers have "When this permanent enters, destroy target artifact or enchantment."

Newborn slivers will sometimes wrap themselves playfully around a human's finger. They grow out of the "playful" part.

Constricting Sliver

Sliver creatures you control have "When this creature enters, you may exile target creature an opponent controls until this creature leaves the battlefield."

Frenetic Sliver

All Slivers have "{0}: If this permanent is on the battlefield, flip a coin. If you win the flip, exile this permanent and return it to the battlefield under its owner's control at the beginning of the next end step. If you lose the flip, sacrifice it."

Mesmeric Sliver

All Slivers have "When this permanent enters, you may fateseal 1." (To fateseal 1, its controller looks at the top card of an opponent's library, then they may put that card on the bottom of that library.)

Brood Sliver

Within weeks, more slivers nested in Otaria than ever existed on Rath.

Whenever a Sliver deals combat damage to a player, its controller may create a 1/1 colorless Sliver creature token.

"Slivers are guided only by simple instinct. Advance the hive, and you will be welcomed. Impede the hive, and you will face unrelenting opposition."
—Freyalise

Telekinetic Sliver

All Slivers have "{T}: Tap target permanent."

"We are kinfolk," explained Karn to the sliver queen. "Just as you need your progeny to complete you, so do I need the pieces of the Legacy to make me whole."

Victual Sliver

All Slivers have "{2}, Sacrifice this permanent: You gain 4 life."

"Slivers are evil and slivers are sly; And if you get eaten, then no one will cry."
—Mogg children's rhyme

Spined Sliver

Whenever a Sliver becomes blocked, that Sliver gets +1/+1 until end of turn for each creature blocking it.

There is no such thing as surprising a sliver.

Striking Sliver

Sliver creatures you control have first strike. (They deal combat damage before creatures without first strike.)

"It will be battle-ready before our strike at Oxid Ridge, and it will guarantee our victory."
—Ketuc of the Helm

Spin Engine

{R}: Target creature can't block Spin Engine this turn.

"Species XR17 feeds upon the mental energies of its victims. This explains why the goblins remain unaffected."
—Riptide Project researcher

Synapse Sliver

Whenever a Sliver deals combat damage to a player, its controller may draw a card.

Aether Vial

At the beginning of your upkeep, you may put a charge counter on Aether Vial.
{T}: You may put a creature card with mana value equal to the number of charge counters on Aether Vial from your hand onto the battlefield.

"I'm not saying I'm sure it's a trap. I'm just saying it wasn't there yesterday and I'm pretty sure I heard it whisper my name. If you're so curious, you touch it."
—Angus, survivor scout

Sol Ring

Sometimes safety is a place. Sometimes it's a person. Sometimes it's a tangible reminder that even in darkness, hope persists.

Arcane Signet

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 Commander's Sphere: Draw a card.

Chrome Mox

Imprint — When Chrome Mox enters, you may exile a nonartifact, nonland card from your hand.
{T}: Add one mana of any of the exiled card's colors.

Mox Opal

Quicksilver Lapidary

The suns of Mirrodin have shone upon perfection only once.

Metalcraft — {T}: Add one mana of any color. Activate only if you control three or more artifacts.

Mana Vault

Mana Vault doesn't untap during your untap step.
At the beginning of your upkeep, you may pay {4}. If you do, untap Mana Vault.
At the beginning of your draw step, if Mana Vault is tapped, it deals 1 damage to you.
{T}: Add {C}{C}{C}.

"Hard to imagine," mused Hanna, stroking the petal, "such a lovely flower inspiring such greed."

Lotus Petal

{T}, Sacrifice Lotus Petal: Add one mana of any color.

Grim Monolith

Grim Monolith doesn't untap during your untap step.
{T}: Add {C}{C}{C}.
{4}: Untap Grim Monolith.

Held in the lion's eye
—Zhalfirin saying meaning "caught in the moment of crisis"

Lion's Eye Diamond

Discard your hand, Sacrifice Lion's Eye Diamond: Add three mana of any one color. Activate only as an instant.

Basalt Monolith

Basalt Monolith doesn't untap during your untap step.
{T}: Add {C}{C}{C}.
{3}: Untap Basalt Monolith.

All the junk, refuse, and offal of the Krark Clan is diligently collected, melted down, and made into more junk, refuse, and offal.

Krark-Clan Ironworks

While most power is used for ordinary, everyday tasks, one shouldn't underestimate its potential for the extraordinary.

Aetherflux Reservoir

Whenever you cast a spell, you gain 1 life for each spell you've cast this turn.
Pay 50 life: Aetherflux Reservoir deals 50 damage to any target.

Supplicants offer flesh and silver, flowers and blood. The altar takes what it will, eyes gleaming with unspoken promises.

Altar of the Brood

Whenever another permanent you control enters, each opponent mills a card.

"If you work at sawing up carcasses, you notice how the joints fit, how the nerves are arrayed, and how the skin peels back."
—Ashnod, to Tawnos

Ashnod's Altar

Blasting Station

{T}, Sacrifice a creature: Blasting Station deals 1 damage to any target.
Whenever a creature enters, you may untap Blasting Station.

"All who inhabit these woods are part of our ritual, whether they realize it or not."

Citanul Hierophants

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

"You've begun to understand the hedrons' true purpose," said Ugin. "The Eldrazi can be imprisoned."
"And how did that work out last time?" asked Jace.

Hedron Archive

{T}: Add {C}{C}.
{2}, {T}, Sacrifice this artifact: Draw two cards.

Mimic Vat

Copy

Imprint — Whenever a nontoken creature dies, you may exile that card. If you do, return each other card exiled with Mimic Vat to its owner's graveyard.
{3}, {T}: Create a token that's a copy of a card exiled with Mimic Vat. It gains haste. Exile it at the beginning of the next end step.

Phyrexian Metamorph

({U/P} can be paid with either {U} or 2 life.)
You may have Phyrexian Metamorph enter as a copy of any artifact or creature on the battlefield, except it's an artifact in addition to its other types.

It wasn't really expected to fly. Then again, it wasn't expected to move, either.

Pili-Pala

Flying
{2}, {Q}: Add one mana of any color. ({Q} is the untap symbol.)

Semblance Anvil

Imprint — When Semblance Anvil enters, you may exile a nonland card from your hand.
Spells you cast that share a card type with the exiled card cost {2} less to cast.

Sensei's Divining Top

{1}: Look at the top three cards of your library, then put them back in any order.
{T}: Draw a card, then put Sensei's Divining Top on top of its owner's library.

"The music is in the drum. I simply coax it out to be heard."

Springleaf Drum

{T}, Tap an untapped creature you control: Add one mana of any color.

The warriors fought against the paralyzing waves until even their thoughts froze in place.

Static Orb

As long as Static Orb is untapped, players can't untap more than two permanents during their untap steps.

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.)

Paradoxically, to tilt the massive jug for a sip, you'd need the energy of the giant's tonic.

Thousand-Year Elixir

You may activate abilities of creatures you control as though those creatures had haste.
{1}, {T}: Untap target creature.

Staff of Domination

{1}: Untap Staff of Domination.
{2}, {T}: You gain 1 life.
{3}, {T}: Untap target creature.
{4}, {T}: Tap target creature.
{5}, {T}: Draw a card.

Its tines cannot be rung by mere physical force. Only magic of great power can start its eldritch resonance.

Strionic Resonator

{2}, {T}: Copy target triggered ability you control. You may choose new targets for the copy. (A triggered ability uses the words "when," "whenever," or "at.")

Urza's metathran children were conceived, birthed, and nurtured by an integrated system of machines.

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