Omnath, Locus of All

If you would lose unspent mana, that mana becomes black instead.
At the beginning of your first main phase, look at the top card of your library. You may reveal that card if it has three or more colored mana symbols in its mana cost. If you do, add three mana in any combination of its colors and put it into your hand. If you don't reveal it, put it into your hand.

Thunderscape Familiar

First strike
Black spells and green spells you cast cost {1} less to cast.

Thornscape Familiar

Red spells and white spells you cast cost {1} less to cast.

Sunscape Familiar

Defender (This creature can't attack.)
Green spells and blue spells you cast cost {1} less to cast.

Spara's Adjudicators

When Spara's Adjudicators enters, target creature an opponent controls can't attack or block until your next turn.
{2}, Exile Spara's Adjudicators from your hand: Target land gains "{T}: Add {G}, {W}, or {U}" until Spara's Adjudicators is cast from exile. You may cast Spara's Adjudicators for as long as it remains exiled.

Shattered Seraph

Flying
When Shattered Seraph enters, you gain 3 life.
{2}, Exile Shattered Seraph from your hand: Target land gains "{T}: Add {W}, {U}, or {B}" until Shattered Seraph is cast from exile. You may cast Shattered Seraph for as long as it remains exiled.

Glamorous Outlaw

When Glamorous Outlaw enters, it deals 2 damage to each opponent and you scry 2.
{2}, Exile Glamorous Outlaw from your hand: Target land gains "{T}: Add {U}, {B}, or {R}" until Glamorous Outlaw is cast from exile. You may cast Glamorous Outlaw for as long as it remains exiled.

Rakish Revelers

When Rakish Revelers enters, create a 1/1 green and white Citizen creature token.
{2}, Exile Rakish Revelers from your hand: Target land gains "{T}: Add {R}, {G}, or {W}" until Rakish Revelers is cast from exile. You may cast Rakish Revelers for as long as it remains exiled.

Masked Bandits

Vigilance
Menace (This creature can't be blocked except by two or more creatures.)
{2}, Exile Masked Bandits from your hand: Target land gains "{T}: Add {B}, {R}, or {G}" until Masked Bandits is cast from exile. You may cast Masked Bandits for as long as it remains exiled.

Knotvine Mystic

Nimble Larcenist

Flying
When Nimble Larcenist enters, target opponent reveals their hand. You choose an artifact, instant, or sorcery card from it and exile that card.

Mystic Snake

Flash
When Mystic Snake enters, counter target spell.

Obscura Interceptor

Flash
Lifelink
When Obscura Interceptor enters, it connives. When it connives this way, return up to one target spell to its owner's hand. (To have a creature connive, draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on that creature.)

Quandrix Cultivator

When Quandrix Cultivator enters, you may search your library for a basic Forest or Island card, put it onto the battlefield, then shuffle.

Knight of New Alara

Each other multicolored creature you control gets +1/+1 for each of its colors.

Siege Rhino

Trample
When Siege Rhino enters, each opponent loses 3 life and you gain 3 life.

Madrush Cyclops

Sage of the Inward Eye

Flying
Whenever you cast a noncreature spell, creatures you control gain lifelink until end of turn.

Meglonoth

Vigilance, trample
Whenever Meglonoth blocks a creature, Meglonoth deals damage to that creature's controller equal to Meglonoth's power.

Mindwrack Liege

Other blue creatures you control get +1/+1.
Other red creatures you control get +1/+1.
{U/R}{U/R}{U/R}{U/R}: You may put a blue or red creature card from your hand onto the battlefield.

Broodmate Dragon

Flying
When Broodmate Dragon enters, create a 4/4 red Dragon creature token with flying.

Dragonlair Spider

Reach
Whenever an opponent casts a spell, create a 1/1 green Insect creature token.

Soul of Emancipation

When Soul of Emancipation enters, destroy up to three other target nonland permanents. For each of those permanents, its controller creates a 3/3 white Angel creature token with flying.

Magister Sphinx

Flying
When Magister Sphinx enters, target player's life total becomes 10.

Charnelhoard Wurm

Trample
Whenever Charnelhoard Wurm deals damage to an opponent, you may return target card from your graveyard to your hand.

Godsire

Vigilance
{T}: Create an 8/8 Beast creature token that's red, green, and white.

Hellkite Overlord

Flying, trample, haste
{R}: Hellkite Overlord gets +1/+0 until end of turn.
{B}{G}: Regenerate Hellkite Overlord.

Empyrial Archangel

Flying
Shroud (This creature can't be the target of spells or abilities.)
All damage that would be dealt to you is dealt to Empyrial Archangel instead.

Ashen Rider

Flying
When Ashen Rider enters or dies, exile target permanent.

Inspired Ultimatum

Target player gains 5 life, Inspired Ultimatum deals 5 damage to any target, then you draw five cards.

Ruinous Ultimatum

Destroy all nonland permanents your opponents control.

Duneblast

Choose up to one creature. Destroy the rest.

Soulquake

Return all creatures on the battlefield and all creature cards in graveyards to their owners' hands.

Unite the Coalition

Choose five. You may choose the same mode more than once.
• Target permanent phases out.
• Target player draws a card.
• Exile target player's graveyard.
• Unite the Coalition deals 2 damage to any target.
• Destroy target artifact or enchantment.

Hour of Revelation

This spell costs {3} less to cast if there are ten or more nonland permanents on the battlefield.
Destroy all nonland permanents.

Iridian Maelstrom

Destroy each creature that isn't all colors.

Culling Sun

Destroy each creature with mana value 3 or less.

Whirlwind of Thought

Whenever you cast a noncreature spell, draw a card.

Explosive Vegetation

Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

Abzan Charm

Choose one —
• Exile target creature with power 3 or greater.
• You draw two cards and you lose 2 life.
• Distribute two +1/+1 counters among one or two target creatures.

Villainous Wealth

Target opponent exiles the top X cards of their library. You may cast any number of spells with mana value X or less from among them without paying their mana costs.

Invoke the Firemind

Choose one —
• Draw X cards.
• Invoke the Firemind deals X damage to any target.

Endless Detour

The owner of target spell, nonland permanent, or card in a graveyard puts it on the top or bottom of their library.

Bant Charm

Choose one —
• Destroy target artifact.
• Put target creature on the bottom of its owner's library.
• Counter target instant spell.

Naya Charm

Choose one —
• Naya Charm deals 3 damage to target creature.
• Return target card from a graveyard to its owner's hand.
• Tap all creatures target player controls.

Trap Essence

Counter target creature spell. Put two +1/+1 counters on up to one target creature.

Lavalanche

Lavalanche deals X damage to target player or planeswalker and each creature that player or that planeswalker's controller controls.

Sultai Charm

Choose one —
• Destroy target monocolored creature.
• Destroy target artifact or enchantment.
• Draw two cards, then discard a card.

Temur Ascendancy

Creatures you control have haste.
Whenever a creature you control with power 4 or greater enters, you may draw a card.

Sultai Ascendancy

At the beginning of your upkeep, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Cabaretti Ascendancy

At the beginning of your upkeep, look at the top card of your library. If it's a creature or planeswalker card, you may reveal it and put it into your hand. If you don't put the card into your hand, you may put it on the bottom of your library.

Grow from the Ashes

Kicker {2} (You may pay an additional {2} as you cast this spell.)
Search your library for a basic land card, put it onto the battlefield, then shuffle. If this spell was kicked, instead search your library for two basic land cards, put them onto the battlefield, then shuffle.

Spoils of Victory

Search your library for a Plains, Island, Swamp, Mountain, or Forest card and put that card onto the battlefield. Then shuffle.

Gaze of Granite

Destroy each nonland permanent with mana value X or less.

Prismatic Omen

Lands you control are every basic land type in addition to their other types.

Farseek

Search your library for a Plains, Island, Swamp, or Mountain card, put it onto the battlefield tapped, then shuffle.

No More

Any number of target creatures you control phase out.
Fuse (You may cast one or both halves of this card from your hand.)

Gallifrey Falls

Gallifrey Falls deals 4 damage to each creature. If a creature dealt damage this way would die this turn, exile it instead.
Fuse (You may cast one or both halves of this card from your hand.)

Gallifrey Falls // No More

Demand

Search your library for a multicolored card, reveal it, put it into your hand, then shuffle.

Supply

Create X 1/1 green Saproling creature tokens.

Supply // Demand

Willing

Creatures you control gain deathtouch and lifelink until end of turn.
Fuse (You may cast one or both halves of this card from your hand.)

Ready

Creatures you control gain indestructible until end of turn. Untap each creature you control.
Fuse (You may cast one or both halves of this card from your hand.)

Ready // Willing

Invent

Search your library for an instant card and/or a sorcery card, reveal them, put them into your hand, then shuffle.

Invert

Switch the power and toughness of each of up to two target creatures until end of turn.

Invert // Invent

Punishment

Destroy each artifact, creature, and enchantment with mana value X.

Crime

Put target creature or enchantment card from an opponent's graveyard onto the battlefield under your control.

Crime // Punishment

Ruin

Aftermath (Cast this spell only from your graveyard. Then exile it.)
Ruin deals damage to target creature equal to the number of lands you control.

Road

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

Road // Ruin

Mind

Aftermath (Cast this spell only from your graveyard. Then exile it.)
Draw two cards.

Spring

Spring // Mind

Jungle Shrine

Jungle Shrine enters tapped.
{T}: Add {R}, {G}, or {W}.

Frontier Bivouac

Frontier Bivouac enters tapped.
{T}: Add {G}, {U}, or {R}.

Opulent Palace

Opulent Palace enters tapped.
{T}: Add {B}, {G}, or {U}.

Mystic Monastery

Mystic Monastery enters tapped.
{T}: Add {U}, {R}, or {W}.

Terramorphic Expanse

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

Evolving Wilds

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

Gateway Plaza

Gateway Plaza enters tapped.
When Gateway Plaza enters, sacrifice it unless you pay {1}.
{T}: Add one mana of any color.

Rupture Spire

Rupture Spire enters tapped.
When Rupture Spire enters, sacrifice it unless you pay {1}.
{T}: Add one mana of any color.

Aether Hub

When Aether Hub enters, you get {E} (an energy counter).
{T}: Add {C}.
{T}, Pay {E}: Add one mana of any color.

Cascading Cataracts

Indestructible
{T}: Add {C}.
{5}, {T}: Add five mana in any combination of colors.

Crystal Quarry

{T}: Add {C}.
{5}, {T}: Add {W}{U}{B}{R}{G}.

Command Tower

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

Skycloud Expanse

Darkwater Catacombs

Krosan Verge

Krosan Verge enters tapped.
{T}: Add {C}.
{2}, {T}, Sacrifice Krosan Verge: Search your library for a Forest card and a Plains card, put them onto the battlefield tapped, then shuffle.

Arctic Treeline

({T}: Add {G} or {W}.)
Arctic Treeline enters tapped.

Snowfield Sinkhole

({T}: Add {W} or {B}.)
Snowfield Sinkhole enters tapped.

Prairie Stream

({T}: Add {W} or {U}.)
Prairie Stream enters tapped unless you control two or more basic lands.

Sunken Hollow

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