As an additional cost to cast this spell, sacrifice a blue permanent.
Counter target spell.
{1}
Aether Spellbomb
Artifact
{U}, Sacrifice Aether Spellbomb: Return target creature to its owner's hand.
{1}, Sacrifice Aether Spellbomb: Draw a card.
{5}{U}
Aethersnipe
Creature - Elemental
When Aethersnipe enters the battlefield, return target nonland permanent to its owner's hand.
Evoke {1}{U}{U} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)
4 /
4
{1}{U}
Arcane Investigator
Creature - Elf Wizard
Search the Room -- {5}{U}: Roll a d20.
1--9 | Draw a card.
10--20 | Look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.
2 /
1
{2}
Arcane Signet
Artifact
{T}: Add one mana of any color in your commander's color identity.
{2}{U}{U}
Archaeomancer
Creature - Human Wizard
When Archaeomancer enters the battlefield, return target instant or sorcery card from your graveyard to your hand.
1 /
2
{2}
Armillary Sphere
Artifact
{2}, {T}, Sacrifice Armillary Sphere: Search your library for up to two basic land cards, reveal them, put them into your hand, then shuffle.
{3}{U}
Behold the Multiverse
Instant
Scry 2, then draw two cards.
Foretell {1}{U} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)
{1}{U}
Blink of an Eye
Instant
Kicker {1}{U} (You may pay an additional {1}{U} as you cast this spell.)
Return target nonland permanent to its owner's hand. If this spell was kicked, draw a card.
{3}
Bonder's Ornament
Artifact
{T}: Add one mana of any color.
{4}, {T}: Each player who controls a permanent named Bonder's Ornament draws a card.
{2}{U}{U}
Bone to Ash
Instant
Counter target creature spell.
Draw a card.
{1}
Bonesplitter
Artifact - Equipment
Equipped creature gets +2/+0.
Equip {1}
{4}{U}
Bury in Books
Instant
This spell costs {2} less to cast if it targets an attacking creature.
Put target creature into its owner's library second from the top.
{5}{U}
Chronostutter
Instant
Put target creature into its owner's library second from the top.
{3}{U}
Churning Eddy
Sorcery
Return target creature and target land to their owners' hands.
{2}{U}
Cloudkin Seer
Creature - Elemental Wizard
Flying
When Cloudkin Seer enters the battlefield, draw a card.
2 /
1
{3}
Commander's Sphere
Artifact
{T}: Add one mana of any color in your commander's color identity.
Sacrifice Commander's Sphere: Draw a card.
{2}{U}
Compulsive Research
Sorcery
Target player draws three cards. Then that player discards two cards unless they discard a land card.
{X}{U}
Condescend
Instant
Counter target spell unless its controller pays {X}. Scry 2. (Look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)
{1}{U}
Confound
Instant
Counter target spell that targets a creature.
Draw a card.
{U}
Consider
Instant
Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)
Draw a card.
{3}{U}
Contact Other Plane
Instant
Roll a d20.
1--9 | Draw two cards.
10--19 | Scry 2, then draw two cards.
20 | Scry 3, then draw three cards.
{3}{U}{U}
Contradict
Instant
Counter target spell.
Draw a card.
{U}{U}
Counterspell
Instant
Counter target spell.
{1}
Darksteel Axe
Artifact - Equipment
Indestructible (Effects that say "destroy" don't destroy this artifact.)
Equipped creature gets +2/+0.
Equip {2}
{3}
Decanter of Endless Water
Artifact
You have no maximum hand size.
{T}: Add one mana of any color.
{3}{U}
Deep Analysis
Sorcery
Target player draws two cards.
Flashback--{1}{U}, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)
{3}{U}
Dematerialize
Sorcery
Return target permanent to its owner's hand.
Flashback {5}{U}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
{U}{U}
Deprive
Instant
As an additional cost to cast this spell, return a land you control to its owner's hand.
Counter target spell.
--
Desert of the Mindful
Land - Desert
Desert of the Mindful enters the battlefield tapped.
{T}: Add {U}.
Cycling {1}{U} ({1}{U}, Discard this card: Draw a card.)
{1}{U}{U}
Dissolve
Instant
Counter target spell. Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)
{U}
Dizzy Spell
Instant
Target creature gets -3/-0 until end of turn.
Transmute {1}{U}{U} ({1}{U}{U}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)
{5}{U}
Draconic Lore
Instant
This spell costs {2} less to cast if you control a Dragon.
Draw three cards.
{1}{U}{U}
Dream Fracture
Instant
Counter target spell. Its controller draws a card.
Draw a card.
{2}{U}
Drift of Phantasms
Creature - Spirit
Defender (This creature can't attack.)
Flying
Transmute {1}{U}{U} ({1}{U}{U}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)
0 /
5
{1}{U}
Echoing Truth
Instant
Return target nonland permanent and all other permanents with the same name as that permanent to their owners' hands.
{1}{U}{U}
Encrust
Enchantment - Aura
Enchant artifact or creature
Enchanted permanent doesn't untap during its controller's untap step and its activated abilities can't be activated.
{6}{U}
Errant Ephemeron
Creature - Illusion
Flying
Suspend 4--{1}{U} (Rather than cast this card from your hand, you may pay {1}{U} and exile it with four time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, cast it without paying its mana cost. It has haste.)
4 /
4
{1}{U}
Essence Scatter
Instant
Counter target creature spell.
{2}{U}
Etherium Spinner
Artifact Creature - Human Wizard
Whenever you cast a spell with mana value 4 or greater, create a 1/1 colorless Thopter artifact creature token with flying.
2 /
1
{2}{U}
Exclude
Instant
Counter target creature spell.
Draw a card.
{1}{U}{U}
Faerie Trickery
Tribal Instant - Faerie
Counter target non-Faerie spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.
{1}{U}
False Summoning
Instant
Counter target creature spell.
{2}{U}
Field Research
Sorcery
Kicker {2}{U} (You may pay an additional {2}{U} as you cast this spell.)
Draw two cards. If this spell was kicked, draw three cards instead.
{U}
Floodhound
Creature - Elemental Dog
{3}, {T}: Investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")
1 /
2
{2}{U}{U}
Foil
Instant
You may discard an Island card and another card rather than pay this spell's mana cost.
Counter target spell.
{3}{U}
Foresee
Sorcery
Scry 4, then draw two cards.
{1}{U}
Goggles of Night
Artifact - Equipment
Whenever equipped creature deals combat damage to a player, scry 1, then draw a card. (To scry 1, look at the top card of your library, then you may put that card on the bottom of your library.)
Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)
{4}{U}
Gone Missing
Sorcery
Put target permanent on top of its owner's library.
Investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")
{3}{U}
Grasp of Phantoms
Sorcery
Put target creature on top of its owner's library.
Flashback {7}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
{3}{U}
Griptide
Instant
Put target creature on top of its owner's library.
{4}{U}
Gryff Vanguard
Creature - Human Knight
Flying
When Gryff Vanguard enters the battlefield, draw a card.
3 /
2
{4}{U}
Gush
Instant
You may return two Islands you control to their owner's hand rather than pay this spell's mana cost.
Draw two cards.
{3}
Haunted Cloak
Artifact - Equipment
Equipped creature has vigilance, trample, and haste.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)
--
Haunted Fengraf
Land
{T}: Add {C}.
{3}, {T}, Sacrifice Haunted Fengraf: Return a creature card at random from your graveyard to your hand.
{3}{U}
Hieroglyphic Illumination
Instant
Draw two cards.
Cycling {U} ({U}, Discard this card: Draw a card.)
{2}{U}
Hydromorph Guardian
Creature - Elemental
{U}, Sacrifice Hydromorph Guardian: Counter target spell that targets a creature you control.
2 /
2
{1}{U}
Impulse
Instant
Look at the top four cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.
{1}{U}
Into the Roil
Instant
Kicker {1}{U} (You may pay an additional {1}{U} as you cast this spell.)
Return target nonland permanent to its owner's hand. If this spell was kicked, draw a card.
{5}
Introduction to Annihilation
Sorcery - Lesson
Exile target nonland permanent. Its controller draws a card.
{1}{U}
Keep Safe
Instant
Counter target spell that targets a permanent you control.
Draw a card.
{3}
Lantern of Revealing
Artifact
{T}: Add one mana of any color.
{4}, {T}: Look at the top card of your library. If it's a land card, you may put it onto the battlefield tapped. If you don't put the card onto the battlefield, you may put it on the bottom of your library.
{X}{U}{U}
Logic Knot
Instant
Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)
Counter target spell unless its controller pays {X}.
--
Lonely Sandbar
Land
Lonely Sandbar enters the battlefield tapped.
{T}: Add {U}.
Cycling {U} ({U}, Discard this card: Draw a card.)
{3}{U}{U}
Lost in the Mist
Instant
Counter target spell. Return target permanent to its owner's hand.
{2}{U}
Loyal Drake
Creature - Drake
Flying
Lieutenant -- At the beginning of combat on your turn, if you control your commander, draw a card.
2 /
2
{3}
Magnifying Glass
Artifact
{T}: Add {C}.
{4}, {T}: Investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")
{1}{U}
Mana Leak
Instant
Counter target spell unless its controller pays {3}.
{4}{U}{U}
Mental Journey
Instant
Draw three cards.
Basic landcycling {1}{U} ({1}{U}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)
{2}
Mind Stone
Artifact
{T}: Add {C}.
{1}, {T}, Sacrifice Mind Stone: Draw a card.
{5}{U}{U}
Mirrorshell Crab
Artifact Creature - Crab
Ward {3} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {3}.)
Channel -- {2}{U}, Discard Mirrorshell Crab: Counter target spell or ability unless its controller pays {3}.
5 /
7
{1}{U}
Miscalculation
Instant
Counter target spell unless its controller pays {2}.
Cycling {2} ({2}, Discard this card: Draw a card.)
{U}
Mizzium Skin
Instant
Target creature you control gets +0/+1 and gains hexproof until end of turn.
Overload {1}{U} (You may cast this spell for its overload cost. If you do, change its text by replacing all instances of "target" with "each.")
{4}{U}
Mnemonic Wall
Creature - Wall
Defender
When Mnemonic Wall enters the battlefield, you may return target instant or sorcery card from your graveyard to your hand.
0 /
4
{3}{U}
Monastery Loremaster
Creature - Djinn Wizard
Megamorph {5}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.)
When Monastery Loremaster is turned face up, return target noncreature, nonland card from your graveyard to your hand.
3 /
2
{U}{U}
Muddle the Mixture
Instant
Counter target instant or sorcery spell.
Transmute {1}{U}{U} ({1}{U}{U}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)
{4}{U}
Mulldrifter
Creature - Elemental
Flying
When Mulldrifter enters the battlefield, draw two cards.
Evoke {2}{U} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)
2 /
2
--
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.
{3}
Navigation Orb
Artifact
{2}, {T}, Sacrifice Navigation Orb: Search your library for up to two basic land cards and/or Gate cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.
{1}{U}
Negate
Instant
Counter target noncreature spell.
{U}{U}
Nullify
Instant
Counter target creature or Aura spell.
{2}{U}
Oona's Grace
Instant
Target player draws a card.
Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.)
--
Opal Palace
Land
{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 the battlefield 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.
{U}
Opt
Instant
Scry 1.
Draw a card.
{U}
Ponder
Sorcery
Look at the top three cards of your library, then put them back in any order. You may shuffle.
Draw a card.
{3}{U}{U}
Pondering Mage
Creature - Human Wizard
When Pondering Mage enters the battlefield, look at the top three cards of your library, then put them back in any order. You may shuffle. Draw a card.
3 /
4
{U}
Preordain
Sorcery
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.)
{3}{U}{U}
Prescient Chimera
Creature - Chimera
Flying
Whenever you cast an instant or sorcery spell, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)
3 /
4
{2}{U}
Ravenform
Sorcery
Exile target artifact or creature. Its controller creates a 1/1 blue Bird creature token with flying.
Foretell {U} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)
--
Remote Isle
Land
Remote Isle enters the battlefield tapped.
{T}: Add {U}.
Cycling {2} ({2}, Discard this card: Draw a card.)
{1}{U}
Remove Soul
Instant
Counter target creature spell.
{X}{U}
Repeal
Instant
Return target nonland permanent with mana value X to its owner's hand.
Draw a card.
{3}{U}
Repository Skaab
Creature - Zombie
Exploit (When this creature enters the battlefield, you may sacrifice a creature.)
When Repository Skaab exploits a creature, return target instant or sorcery card from your graveyard to your hand.
3 /
3
{2}{U}
Repulse
Instant
Return target creature to its owner's hand.
Draw a card.
{2}{U}{U}
Rewind
Instant
Counter target spell. Untap up to four lands.
{3}{U}
Run Out of Town
Instant
The owner of target nonland permanent puts it on the top or bottom of their library.
{4}{U}
Rush of Knowledge
Sorcery
Draw cards equal to the highest mana value among permanents you control.
{3}{U}{U}
Salvager of Secrets
Creature - Merfolk Wizard
When Salvager of Secrets enters the battlefield, return target instant or sorcery card from your graveyard to your hand.
2 /
2
{3}{U}
Scatter Arc
Instant
Counter target noncreature spell.
Draw a card.
{3}{U}
Scattered Thoughts
Instant
Look at the top four cards of your library. Put two of those cards into your hand and the rest into your graveyard.
{1}{U}
Scour All Possibilities
Sorcery
Scry 2, then draw a card.
Flashback {4}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
{7}
Scour from Existence
Instant
Exile target permanent.
{4}{U}
Scrivener
Creature - Human Wizard
When Scrivener enters the battlefield, you may return target instant card from your graveyard to your hand.
2 /
2
{2}{U}
Sea Gate Oracle
Creature - Human Wizard
When Sea Gate Oracle enters the battlefield, look at the top two cards of your library. Put one of them into your hand and the other on the bottom of your library.
1 /
3
{1}{U}{U}
Secrets of the Golden City
Sorcery
Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.)
Draw two cards. If you have the city's blessing, draw three cards instead.
{U}
Secrets of the Key
Instant
Investigate. If this spell was cast from a graveyard, investigate twice instead. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")
Flashback {3}{U}
{3}
Seer's Lantern
Artifact
{T}: Add {C}.
{2}, {T}: Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)
{U}
Serum Visions
Sorcery
Draw a card. Scry 2.
{5}{U}
Shoreline Ranger
Creature - Bird Soldier Ranger
Flying
Islandcycling {2} ({2}, Discard this card: Search your library for an Island card, reveal it, put it into your hand, then shuffle.)
3 /
4
{5}
Shrine Steward
Artifact Creature - Construct
When Shrine Steward enters the battlefield, you may search your library for an Aura or Shrine card, reveal it, put it into your hand, then shuffle.
3 /
2
{U}
Silent Departure
Sorcery
Return target creature to its owner's hand.
Flashback {4}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
{4}
Sisay's Ring
Artifact
{T}: Add {C}{C}.
{2}
Sky Diamond
Artifact
Sky Diamond enters the battlefield tapped.
{T}: Add {U}.
{U}
Spell Pierce
Instant
Counter target noncreature spell unless its controller pays {2}.
{3}{U}{U}
Sphinx's Disciple
Creature - Human Wizard
Flying
Inspired -- Whenever Sphinx's Disciple becomes untapped, draw a card.
2 /
2
{1}{U}{U}
Stoic Rebuttal
Instant
Metalcraft -- This spell costs {1} less to cast if you control three or more artifacts.
Counter target spell.
{3}
Strider Harness
Artifact - Equipment
Equipped creature gets +1/+1 and has haste.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)
{2}{U}
Sweep Away
Instant
Return target creature to its owner's hand. If that creature is attacking, you may put it on top of its owner's library instead.
{X}{U}
Syncopate
Instant
Counter target spell unless its controller pays {X}. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.
{3}{U}
Tamiyo's Compleation
Enchantment - Aura
Flash
Enchant artifact, creature, or planeswalker
When Tamiyo's Compleation enters the battlefield, tap enchanted permanent. If it's an Equipment, unattach it.
Enchanted permanent loses all abilities and doesn't untap during its controller's untap step.
{3}{U}
Tamiyo's Epiphany
Sorcery
Scry 4, then draw two cards.
{1}{U}
Tazeem Roilmage
Creature - Merfolk Wizard
Kicker {4} (You may pay an additional {4} as you cast this spell.)
When Tazeem Roilmage enters the battlefield, if it was kicked, return target instant or sorcery card from your graveyard to your hand.
2 /
1
{2}{U}
Temporal Machinations
Sorcery
Return target creature to its owner's hand. If you control an artifact, draw a card.
{3}{U}{U}
Tezzeret's Ambition
Sorcery
Draw three cards. If you control no artifacts, discard a card.
{5}{U}
Thassa's Bounty
Sorcery
Draw three cards. Target player mills three cards.
{1}{U}
Think Twice
Instant
Draw a card.
Flashback {2}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
{2}
Thought Vessel
Artifact
You have no maximum hand size.
{T}: Add {C}.
{4}{U}
Thoughtcast
Sorcery
Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
Draw two cards.
{2}{U}
Time Ebb
Sorcery
Put target creature on top of its owner's library.
{1}{U}
Train of Thought
Sorcery
Replicate {1}{U} (When you cast this spell, copy it for each time you paid its replicate cost.)
Draw a card.
{3}{U}{U}
Traumatic Visions
Instant
Counter target spell.
Basic landcycling {1}{U} ({1}{U}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)
{7}{U}
Treasure Cruise
Sorcery
Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)
Draw three cards.
{2}{U}
Trinket Mage
Creature - Human Wizard
When Trinket Mage enters the battlefield, you may search your library for an artifact card with mana value 1 or less, reveal that card, put it into your hand, then shuffle.
2 /
2
{U}
Turn Aside
Instant
Counter target spell that targets a permanent you control.
{4}
Ur-Golem's Eye
Artifact
{T}: Add {C}{C}.
{3}
Watchful Automaton
Artifact Creature - Construct
{2}{U}: Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)
2 /
2
{U}
Whispers of the Muse
Instant
Buyback {5} (You may pay an additional {5} as you cast this spell. If you do, put this card into your hand as it resolves.)
Draw a card.
{U}
Witness Protection
Enchantment - Aura
Enchant creature
Enchanted creature loses all abilities and is a green and white Citizen creature with base power and toughness 1/1 named Legitimate Businessperson. (It loses all other colors, card types, creature types, and names.)
{4}{U}
Witness of Tomorrows
Enchantment Creature - Sphinx
Flying
{3}{U}: Scry 1.
3 /
4
{7}
Wretched Gryff
Creature - Eldrazi Hippogriff
Emerge {5}{U} (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value.)
When you cast this spell, draw a card.
Flying
3 /
4
{4}{U}{ // }{1}{U}
Young Blue Dragon // Sand Augury
Creature - Dragon // Sorcery - Adventure
Flying
Scry 1, then draw a card. (Then exile this card. You may cast the creature later from exile.)