Teferi's Moat

As Teferi's Moat enters, choose a color.
Creatures of the chosen color without flying can't attack you.

Esper Charm

Choose one —
• Destroy target enchantment.
• Draw two cards.
• Target player discards two cards.

Doomsday Specter

Flying
When Doomsday Specter enters, return a blue or black creature you control to its owner's hand.
Whenever Doomsday Specter deals combat damage to a player, look at that player's hand and choose a card from it. The player discards that card.

Sisay's Ingenuity

Enchant creature
When Sisay's Ingenuity enters, draw a card.
Enchanted creature has "{2}{U}: Target creature becomes the color of your choice until end of turn."

Plains

Scuttlemutt

{T}: Add one mana of any color.
{T}: Target creature becomes the color or colors of your choice until end of turn.

Insight

Whenever an opponent casts a green spell, you draw a card.

Eight-and-a-Half-Tails

{1}{W}: Target permanent you control gains protection from white until end of turn.
{1}: Target spell or permanent becomes white until end of turn.

Flooded Woodlands

Green creatures can't attack unless their controller sacrifices a land of their choice for each green creature they control that's attacking. (This cost is paid as attackers are declared.)

Flash Flood

Choose one —
• Destroy target red permanent.
• Return target Mountain to its owner's hand.

Wash Out

Return all permanents of the color of your choice to their owners' hands.

Western Paladin

{B}{B}, {T}: Destroy target white creature.

Blind Seer

{1}{U}: Target spell or permanent becomes the color of your choice until end of turn.

Ersatz Gnomes

{T}: Target spell becomes colorless.
{T}: Target permanent becomes colorless until end of turn.

Stromgald Cabal

{T}, Pay 1 life: Counter target white spell.

Blue Elemental Blast

Choose one —
• Counter target red spell.
• Destroy target red permanent.

Ertai, the Corrupted

{U}, {T}, Sacrifice a creature or enchantment: Counter target spell.

Tsabo's Assassin

{T}: Destroy target creature if it shares a color with the most common color among all permanents or a color tied for most common. A creature destroyed this way can't be regenerated.

Snow-Covered Swamp

Hibernation

Return all green permanents to their owners' hands.

Warped Devotion

Whenever a permanent is returned to a player's hand, that player discards a card.

Mother of Runes

{T}: Target creature you control gains protection from the color of your choice until end of turn.

Nightcreep

Until end of turn, all creatures become black and all lands become Swamps.

Llawan, Cephalid Empress

When Llawan, Cephalid Empress enters, return all blue creatures your opponents control to their owners' hands.
Your opponents can't cast blue creature spells.

Pentarch Paladin

Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.)
As Pentarch Paladin enters, choose a color.
{W}{W}, {T}: Destroy target permanent of the chosen color.

Azorius Aethermage

Whenever a permanent is returned to your hand, you may pay {1}. If you do, draw a card.

Burnished Hart

{3}, Sacrifice this creature: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

Quickchange

Target creature becomes the color or colors of your choice until end of turn.
Draw a card.

Shifting Sky

As Shifting Sky enters, choose a color.
All nonland permanents are the chosen color.

Eastern Paladin

{B}{B}, {T}: Destroy target green creature.

Deathgrip

Distorting Lens

{T}: Target permanent becomes the color of your choice until end of turn.

Leshrac's Sigil

Whenever an opponent casts a green spell, you may pay {B}{B}. If you do, look at that player's hand and choose a card from it. The player discards that card.
{B}{B}: Return Leshrac's Sigil to its owner's hand.

Vodalian Mystic

{T}: Target instant or sorcery spell becomes the color of your choice.

Virtue's Ruin

Stormscape Familiar

Flying
White spells and black spells you cast cost {1} less to cast.

Northern Paladin

{W}{W}, {T}: Destroy target black permanent.

Tidal Visionary

{T}: Target creature becomes the color of your choice until end of turn.

Breath of Dreams

Cumulative upkeep {U} (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.)
Green creatures have "Cumulative upkeep {1}."

Govern the Guildless

Gain control of target monocolored creature.
Forecast — {1}{U}, Reveal Govern the Guildless from your hand: Target creature becomes the color or colors of your choice until end of turn. (Activate only during your upkeep and only once each turn.)

Magister Sphinx

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

Perish

Destroy all green creatures. They can't be regenerated.

Hydroblast

Choose one —
• Counter target spell if it's red.
• Destroy target permanent if it's red.

Southern Paladin

{W}{W}, {T}: Destroy target red permanent.

Recoil

Return target permanent to its owner's hand. Then that player discards a card.

Sire of Stagnation

Devoid (This card has no color.)
Whenever a land an opponent controls enters, that player exiles the top two cards of their library and you draw two cards.

Nature's Ruin

Painter's Servant

As Painter's Servant enters, choose a color.
All cards that aren't on the battlefield, spells, and permanents are the chosen color in addition to their other colors.

Sphinx of the Steel Wind

Flying, first strike, vigilance, lifelink, protection from red and from green

Celestial Purge

Sway of Illusion

Any number of target creatures become the color of your choice until end of turn.
Draw a card.

Douse

Dromar, the Banisher

Flying
Whenever Dromar, the Banisher deals combat damage to a player, you may pay {2}{U}. If you do, choose a color, then return all creatures of that color to their owners' hands.

Island

Order of the Sacred Torch

{T}, Pay 1 life: Counter target black spell.

Vela the Night-Clad

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)
Other creatures you control have intimidate.
Whenever Vela the Night-Clad or another creature you control leaves the battlefield, each opponent loses 1 life.

Righteous War

White creatures you control have protection from black.
Black creatures you control have protection from white.

Wrath of Marit Lage

When Wrath of Marit Lage enters, tap all red creatures.
Red creatures don't untap during their controllers' untap steps.

Darkest Hour

Light of Day

Cloud Cover

Whenever another permanent you control becomes the target of a spell or ability an opponent controls, you may return that permanent to its owner's hand.

Sleeper's Robe

Enchant creature
Enchanted creature has fear. (It can't be blocked except by artifact creatures and/or black creatures.)
Whenever enchanted creature deals combat damage to an opponent, you may draw a card.