Search target opponent's library for an artifact card and put that card onto the battlefield under your control. Then that player shuffles.
{4}{W}{W}
Adarkar Valkyrie
Snow Creature - Angel
Flying, vigilance
{T}: When target creature other than Adarkar Valkyrie dies this turn, return that card to the battlefield under your control.
4 /
5
{5}{U}{U}
Agent of Treachery
Creature - Human Rogue
When Agent of Treachery enters the battlefield, gain control of target permanent.
At the beginning of your end step, if you control three or more permanents you don't own, draw three cards.
2 /
3
--
Ancient Tomb
Land
{T}: Add {C}{C}. Ancient Tomb deals 2 damage to you.
{1}{W}{B}
Anguished Unmaking
Instant
Exile target nonland permanent. You lose 3 life.
{1}{U}
Aphetto Alchemist
Creature - Human Wizard
{T}: Untap target artifact or creature.
Morph {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.)
1 /
2
--
Arcane Lighthouse
Land
{T}: Add {C}.
{1}, {T}: Until end of turn, creatures your opponents control lose hexproof and shroud and can't have hexproof or shroud.
--
Arcane Sanctum
Land
Arcane Sanctum enters the battlefield tapped.
{T}: Add {W}, {U}, or {B}.
{2}
Arcane Signet
Artifact
{T}: Add one mana of any color in your commander's color identity.
{3}{U}{U}{U}
Arcanis the Omnipotent
Legendary Creature - Wizard
{T}: Draw three cards.
{2}{U}{U}: Return Arcanis the Omnipotent to its owner's hand.
3 /
4
{2}{U}{U}
Archivist
Creature - Human Wizard
{T}: Draw a card.
1 /
1
{2}{U}{U}{U}
Azami, Lady of Scrolls
Legendary Creature - Human Wizard
Tap an untapped Wizard you control: Draw a card.
0 /
2
--
Azorius Chancery
Land
Azorius Chancery enters the battlefield tapped.
When Azorius Chancery enters the battlefield, return a land you control to its owner's hand.
{T}: Add {W}{U}.
{2}
Azorius Signet
Artifact
{1}, {T}: Add {W}{U}.
{4}{U}{U}{U}
Blatant Thievery
Sorcery
For each opponent, gain control of target permanent that player controls.
--
Boseiju, Who Shelters All
Legendary Land
Boseiju, Who Shelters All enters the battlefield tapped.
{T}, Pay 2 life: Add {C}. If that mana is spent on an instant or sorcery spell, that spell can't be countered.
{3}{U}{U}
Bribery
Sorcery
Search target opponent's library for a creature card and put that card onto the battlefield under your control. Then that player shuffles.
--
Command Tower
Land
{T}: Add one mana of any color in your commander's color identity.
{5}{U}{U}
Commandeer
Instant
You may exile two blue cards from your hand rather than pay this spell's mana cost.
Gain control of target noncreature spell. You may choose new targets for it. (If that spell is an artifact, enchantment, or planeswalker, the permanent enters the battlefield under your control.)
{3}{U}{U}
Corrupted Conscience
Enchantment - Aura
Enchant creature
You control enchanted creature.
Enchanted creature has infect. (It deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
{1}{U}
Cyclonic Rift
Instant
Return target nonland permanent you don't control to its owner's hand.
Overload {6}{U} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")
{1}{B}
Demonic Tutor
Sorcery
Search your library for a card, put that card into your hand, then shuffle.
{3}{U}{U}
Desertion
Instant
Counter target spell. If an artifact or creature spell is countered this way, put that card onto the battlefield under your control instead of into its owner's graveyard.
--
Dimir Aqueduct
Land
Dimir Aqueduct enters the battlefield tapped.
When Dimir Aqueduct enters the battlefield, return a land you control to its owner's hand.
{T}: Add {U}{B}.
{2}
Dimir Signet
Artifact
{1}, {T}: Add {U}{B}.
{1}{U}{U}
Dominating Licid
Creature - Licid
{1}{U}{U}, {T}: Dominating Licid loses this ability and becomes an Aura enchantment with enchant creature. Attach it to target creature. You may pay {U} to end this effect.
You control enchanted creature.
1 /
1
--
Drowned Catacomb
Land
Drowned Catacomb enters the battlefield tapped unless you control an Island or a Swamp.
{T}: Add {U} or {B}.
{4}
Empowered Autogenerator
Artifact
Empowered Autogenerator enters the battlefield tapped.
{T}: Put a charge counter on Empowered Autogenerator. Add X mana of any one color, where X is the number of charge counters on Empowered Autogenerator.
{3}{U}{U}
Empress Galina
Legendary Creature - Merfolk Noble
{U}{U}, {T}: Gain control of target legendary permanent. (This effect lasts indefinitely.)
1 /
3
{13}
Emrakul, the Promised End
Legendary Creature - Eldrazi
This spell costs {1} less to cast for each card type among cards in your graveyard.
When you cast this spell, you gain control of target opponent during that player's next turn. After that turn, that player takes an extra turn.
Flying, trample, protection from instants
13 /
13
{W}
Enlightened Tutor
Instant
Search your library for an artifact or enchantment card, reveal it, then shuffle and put that card on top.
{W}
Esper Sentinel
Artifact Creature - Human Soldier
Whenever an opponent casts their first noncreature spell each turn, draw a card unless that player pays {X}, where X is Esper Sentinel's power.
1 /
1
{7}{U}{U}
Expropriate
Sorcery
Council's dilemma -- Starting with you, each player votes for time or money. For each time vote, take an extra turn after this one. For each money vote, choose a permanent owned by the voter and gain control of it. Exile Expropriate.
--
Fabled Passage
Land
{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.
{3}{U}
Fatestitcher
Creature - Zombie Wizard
{T}: You may tap or untap another target permanent.
Unearth {U} ({U}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)
1 /
2
{2}{U}
Fierce Guardianship
Instant
If you control a commander, you may cast this spell without paying its mana cost.
Counter target noncreature spell.
--
Flooded Strand
Land
{T}, Pay 1 life, Sacrifice Flooded Strand: Search your library for a Plains or Island card, put it onto the battlefield, then shuffle.
{3}{U}{U}
Force of Will
Instant
You may pay 1 life and exile a blue card from your hand rather than pay this spell's mana cost.
Counter target spell.
{2}{U}
Freed from the Real
Enchantment - Aura
Enchant creature
{U}: Tap enchanted creature.
{U}: Untap enchanted creature.
{3}{U}{U}{U}
Gather Specimens
Instant
If a creature would enter the battlefield under an opponent's control this turn, it enters the battlefield under your control instead.
{1}{U}
Gilded Drake
Creature - Drake
Flying
When Gilded Drake enters the battlefield, exchange control of Gilded Drake and up to one target creature an opponent controls. If you don't or can't make an exchange, sacrifice Gilded Drake. This ability still resolves if its target becomes illegal.
3 /
3
{5}
Gilded Lotus
Artifact
{T}: Add three mana of any one color.
--
Glacial Fortress
Land
Glacial Fortress enters the battlefield tapped unless you control a Plains or an Island.
{T}: Add {W} or {U}.
--
Godless Shrine
Land - Plains Swamp
({T}: Add {W} or {B}.)
As Godless Shrine enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
{2}{B}{B}
Gonti, Lord of Luxury
Legendary Creature - Aetherborn Rogue
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.
2 /
3
--
Hallowed Fountain
Land - Plains Island
({T}: Add {W} or {U}.)
As Hallowed Fountain enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
{2}{W}
Idyllic Tutor
Sorcery
Search your library for an enchantment card, reveal it, put it into your hand, then shuffle.
{2}
Illusionist's Bracers
Artifact - Equipment
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}
{2}{U}
Ioreth of the Healing House
Legendary Creature - Human Cleric
{T}: Untap another target permanent.
{T}: Untap two other target legendary creatures.
1 /
4
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Isolated Chapel
Land
Isolated Chapel enters the battlefield tapped unless you control a Plains or a Swamp.
{T}: Add {W} or {B}.
{1}{U}
Jushi Apprentice
Creature - Human Wizard
{2}{U}, {T}: Draw a card. If you have nine or more cards in hand, flip Jushi Apprentice.
1 /
2
--
Tomoya the Revealer
Legendary Creature - Human Wizard
{3}{U}{U}, {T}: Target player draws X cards, where X is the number of cards in your hand.
1 /
2
{2}{U}
Kelpie Guide
Creature - Beast
{T}: Untap another target permanent you control.
{T}: Tap target permanent. Activate only if you control eight or more lands.
2 /
2
--
Lotus Field
Land
Hexproof
Lotus Field enters the battlefield tapped.
When Lotus Field enters the battlefield, sacrifice two lands.
{T}: Add three mana of any one color.
{2}
Magewright's Stone
Artifact
{1}, {T}: Untap target creature that has an activated ability with {T} in its cost.
{U}{U}
Mana Drain
Instant
Counter target spell. At the beginning of your next main phase, add an amount of {C} equal to that spell's mana value.
--
Marsh Flats
Land
{T}, Pay 1 life, Sacrifice Marsh Flats: Search your library for a Plains or Swamp card, put it onto the battlefield, then shuffle.
{X}{X}{U}{U}{U}{U}
Mass Manipulation
Sorcery
Gain control of X target creatures and/or planeswalkers.
{7}
Memnarch
Legendary Artifact Creature - Wizard
{1}{U}{U}: Target permanent becomes an artifact in addition to its other types. (This effect lasts indefinitely.)
{3}{U}: Gain control of target artifact. (This effect lasts indefinitely.)
4 /
5
{W}{U}{B}
Merieke Ri Berit
Legendary Creature - Human
Merieke Ri Berit doesn't untap during your untap step.
{T}: Gain control of target creature for as long as you control Merieke Ri Berit. When Merieke Ri Berit leaves the battlefield or becomes untapped, destroy that creature. It can't be regenerated.
1 /
1
--
Minamo, School at Water's Edge
Legendary Land
{T}: Add {U}.
{U}, {T}: Untap target legendary permanent.
{5}{U}{U}
Mind's Dilation
Enchantment
Whenever an opponent casts their first spell each turn, that player exiles the top card of their library. If it's a nonland card, you may cast it without paying its mana cost.
{6}
Mindslaver
Legendary Artifact
{4}, {T}, Sacrifice Mindslaver: You control target player during that player's next turn. (You see all cards that player could see and make all decisions for the player.)
--
Miren, the Moaning Well
Legendary Land
{T}: Add {C}.
{3}, {T}, Sacrifice a creature: You gain life equal to the sacrificed creature's toughness.
{W}
Mother of Runes
Creature - Human Cleric
{T}: Target creature you control gains protection from the color of your choice until end of turn.
1 /
1
{3}{U}{U}
Mystic Confluence
Instant
Choose three. You may choose the same mode more than once.
• Counter target spell unless its controller pays {3}.
• Return target creature to its owner's hand.
• Draw a card.
{U}
Mystic Remora
Enchantment
Cumulative upkeep {1} (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.)
Whenever an opponent casts a noncreature spell, you may draw a card unless that player pays {4}.
--
Mystic Sanctuary
Land - Island
({T}: Add {U}.)
Mystic Sanctuary enters the battlefield tapped unless you control three or more other Islands.
When Mystic Sanctuary enters the battlefield untapped, you may put target instant or sorcery card from your graveyard on top of your library.
{U}{U}
Narset's Reversal
Instant
Copy target instant or sorcery spell, then return it to its owner's hand. You may choose new targets for the copy.
--
Orzhov Basilica
Land
Orzhov Basilica enters the battlefield tapped.
When Orzhov Basilica enters the battlefield, return a land you control to its owner's hand.
{T}: Add {W}{B}.
{2}
Orzhov Signet
Artifact
{1}, {T}: Add {W}{B}.
{3}
Patriar's Seal
Artifact
{T}: Add one mana of any color.
{1}, {T}: Untap target legendary creature you control.
{1}{U}{U}
Pemmin's Aura
Enchantment - Aura
Enchant creature
{U}: Untap enchanted creature.
{U}: Enchanted creature gains flying until end of turn.
{U}: Enchanted creature gains shroud until end of turn. (It can't be the target of spells or abilities.)
{1}: Enchanted creature gets +1/-1 or -1/+1 until end of turn.
--
Phyrexian Tower
Legendary Land
{T}: Add {C}.
{T}, Sacrifice a creature: Add {B}{B}.
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Polluted Delta
Land
{T}, Pay 1 life, Sacrifice Polluted Delta: Search your library for an Island or Swamp card, put it onto the battlefield, then shuffle.
--
Prairie Stream
Land - Plains Island
({T}: Add {W} or {U}.)
Prairie Stream enters the battlefield tapped unless you control two or more basic lands.
--
Prismatic Vista
Land
{T}, Pay 1 life, Sacrifice Prismatic Vista: Search your library for a basic land card, put it onto the battlefield, then shuffle.
--
Raffine's Tower
Land - Plains Island Swamp
({T}: Add {W}, {U}, or {B}.)
Raffine's Tower enters the battlefield tapped.
Cycling {3} ({3}, Discard this card: Draw a card.)
{2}{U}
Rhystic Study
Enchantment
Whenever an opponent casts a spell, you may draw a card unless that player pays {1}.
{3}
Rings of Brighthearth
Artifact
Whenever you activate an ability, if it isn't a mana ability, you may pay {2}. If you do, copy that ability. You may choose new targets for the copy.
{3}{W}
Smothering Tithe
Enchantment
Whenever an opponent draws a card, that player may pay {2}. If the player doesn't, you create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")
{1}
Sol Ring
Artifact
{T}: Add {C}{C}.
{2}{U}{U}
Steal Artifact
Enchantment - Aura
Enchant artifact
You control enchanted artifact.
--
Strip Mine
Land
{T}: Add {C}.
{T}, Sacrifice Strip Mine: Destroy target land.
--
Sunken Hollow
Land - Island Swamp
({T}: Add {U} or {B}.)
Sunken Hollow enters the battlefield tapped unless you control two or more basic lands.
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
{2}
Swiftfoot Boots
Artifact - Equipment
Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.)
Equip {1}
{3}{U}
Thassa, Deep-Dwelling
Legendary Enchantment Creature - God
Indestructible
As long as your devotion to blue is less than five, Thassa isn't a creature.
At the beginning of your end step, exile up to one other target creature you control, then return that card to the battlefield under your control.
{3}{U}: Tap another target creature.
6 /
5
{2}
Thought Vessel
Artifact
You have no maximum hand size.
{T}: Add {C}.
{3}
Thousand-Year Elixir
Artifact
You may activate abilities of creatures you control as though those creatures had haste.
{1}, {T}: Untap target creature.
{3}{U}{U}
Treachery
Enchantment - Aura
Enchant creature
When Treachery enters the battlefield, untap up to five lands.
You control enchanted creature.
{2}{W}{U}
Unbender Tine
Artifact
{T}: Untap another target permanent.
{2}{U}
Vizier of Tumbling Sands
Creature - Human Cleric
{T}: Untap another target permanent.
Cycling {1}{U} ({1}{U}, Discard this card: Draw a card.)
When you cycle Vizier of Tumbling Sands, untap target permanent.
1 /
3
{W}{U}{B}
Void Rend
Instant
This spell can't be countered.
Destroy target nonland permanent.
--
Watery Grave
Land - Island Swamp
({T}: Add {U} or {B}.)
As Watery Grave enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.