When Aether Theorist enters the battlefield, you get {E}{E}{E} (three energy counters).
{T}, Pay {E}: Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)
1 /
3
{U}
Artificer's Assistant
Creature - Bird
Flying
Whenever you cast a historic spell, scry 1. (Artifacts, legendaries, and Sagas are historic. To scry 1, look at the top card of your library, then you may put that card on the bottom of your library.)
1 /
1
{1}{U}
Augury Owl
Creature - Bird
Flying
When Augury Owl enters the battlefield, scry 3. (Look at the top three 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 /
1
{1}{U}{U}
Barrin, Tolarian Archmage
Legendary Creature - Human Wizard
When Barrin, Tolarian Archmage enters the battlefield, return up to one other target creature or planeswalker to its owner's hand.
At the beginning of your end step, if a permanent was put into your hand from the battlefield this turn, draw a card.
2 /
2
{4}
Biblioplex Assistant
Artifact Creature - Gargoyle
Flying
When Biblioplex Assistant enters the battlefield, put up to one target instant or sorcery card from your graveyard on top of your library.
2 /
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.
{2}
Campus Guide
Artifact Creature - Golem
When Campus Guide enters the battlefield, you may search your library for a basic land card, reveal it, then shuffle and put that card on top.
2 /
1
{U}
Careful Study
Sorcery
Draw two cards, then discard two cards.
{2}{U}
Catalog
Instant
Draw two cards, then discard a card.
{1}
Codex Shredder
Artifact
{T}: Target player mills a card. (They put the top card of their library into their graveyard.)
{5}, {T}, Sacrifice Codex Shredder: Return target card from your graveyard to your hand.
{2}{U}
Compulsive Research
Sorcery
Target player draws three cards. Then that player discards two cards unless they discard a land card.
{2}{U}
Convolute
Instant
Counter target spell unless its controller pays {4}.
{1}{U}
Curate
Instant
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.)
Draw a card.
{1}{U}
Curious Homunculus
Creature - Homunculus
{T}: Add {C}. Spend this mana only to cast an instant or sorcery spell.
At the beginning of your upkeep, if there are three or more instant and/or sorcery cards in your graveyard, transform Curious Homunculus.
1 /
1
--
Voracious Reader
Creature - Eldrazi Homunculus
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Instant and sorcery spells you cast cost {1} less to cast.
1 /
1
{2}{U}
Curse of the Bloody Tome
Enchantment - Aura Curse
Enchant player
At the beginning of enchanted player's upkeep, that player mills two cards.
{2}{U}
Disruptive Student
Creature - Human Wizard
{T}: Counter target spell unless its controller pays {1}.
1 /
1
{2}{U}
Divination
Sorcery
Draw two cards.
{U}
Eidolon of Philosophy
Enchantment Creature - Spirit
{6}{U}, Sacrifice Eidolon of Philosophy: Draw three cards.
1 /
2
{U}
Enchantment Alteration
Instant
Attach target Aura attached to a creature or land to another permanent of that type.
{U}
Faerie Miscreant
Creature - Faerie Rogue
Flying
When Faerie Miscreant enters the battlefield, if you control another creature named Faerie Miscreant, draw a card.
1 /
1
{1}{U}
Faerie Vandal
Creature - Faerie Rogue
Flash
Flying
Whenever you draw your second card each turn, put a +1/+1 counter on Faerie Vandal.
1 /
2
{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.
{1}{U}
Flash Counter
Instant
Counter target instant spell.
{2}{U}
Frantic Search
Instant
Draw two cards, then discard two cards. Untap up to three lands.
{X}{U}{U}{U}
Gadwick, the Wizened
Legendary Creature - Human Wizard
When Gadwick, the Wizened enters the battlefield, draw X cards.
Whenever you cast a blue spell, tap target nonland permanent an opponent controls.
3 /
3
{2}{U}
Geist of the Archives
Creature - Spirit
Defender
At the beginning of your upkeep, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)
0 /
4
{4}
Geth's Grimoire
Artifact
Whenever an opponent discards a card, you may draw a card.
{1}{U}
Ghostly Pilferer
Creature - Spirit Rogue
Whenever Ghostly Pilferer becomes untapped, you may pay {2}. If you do, draw a card.
Whenever an opponent casts a spell from anywhere other than their hand, draw a card.
Discard a card: Ghostly Pilferer can't be blocked this turn.
2 /
1
{U}
Hapless Researcher
Creature - Human Wizard
Sacrifice Hapless Researcher: Draw a card, then discard a card.
1 /
1
{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.
{U}
Index
Sorcery
Look at the top five cards of your library, then put them back in any order.
{5}
Introduction to Annihilation
Sorcery - Lesson
Exile target nonland permanent. Its controller draws a card.
--
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}.)
--
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}.)
--
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}.)
--
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}.)
--
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}.)
--
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}.)
--
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}.)
--
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}.)
--
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}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
{3}{U}
Jace's Sanctum
Enchantment
Instant and sorcery spells you cast cost {1} less to cast.
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}
Letter of Acceptance
Artifact
{T}: Add one mana of any color.
{2}, {T}, Sacrifice Letter of Acceptance: Draw a card.
{1}
Library of Leng
Artifact
You have no maximum hand size.
If an effect causes you to discard a card, discard it, but you may put it on top of your library instead of into your graveyard.
{1}{U}
Mass Diminish
Sorcery
Until your next turn, creatures target player controls have base power and toughness 1/1.
Flashback {3}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
{2}
Mazemind Tome
Artifact
{T}, Put a page counter on Mazemind Tome: Scry 1.
{2}, {T}, Put a page counter on Mazemind Tome: Draw a card.
When there are four or more page counters on Mazemind Tome, exile it. If you do, you gain 4 life.
{1}{U}
Mercurial Transformation
Sorcery - Lesson
Until end of turn, target nonland permanent loses all abilities and becomes your choice of a blue Frog creature with base power and toughness 1/1 or a blue Octopus creature with base power and toughness 4/4.
{U}
Miscast
Instant
Counter target instant or sorcery spell unless its controller pays {3}.
{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.)
{U}
Obsessive Search
Instant
Draw a card.
Madness {U} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
{U}
Opt
Instant
Scry 1.
Draw a card.
{U}
Overwhelmed Apprentice
Creature - Human Wizard
When Overwhelmed Apprentice enters the battlefield, each opponent mills two cards. Then you 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 /
2
{1}{U}
Owl Familiar
Creature - Bird
Flying
When Owl Familiar enters the battlefield, draw a card, then discard a card.
1 /
1
{3}{U}
Plagiarize
Instant
Until end of turn, if target player would draw a card, instead that player skips that draw and you draw a card.
{1}{U}{U}
Rescind
Instant
Return target permanent to its owner's hand.
Cycling {2} ({2}, Discard this card: Draw a card.)
{U}
Rescue
Instant
Return target permanent you control to its owner's hand.
{2}{U}
Rousing Read
Enchantment - Aura
Enchant creature
When Rousing Read enters the battlefield, draw two cards, then discard a card.
Enchanted creature gets +1/+1 and has flying.
{U}
Sorcerous Sight
Sorcery
Look at target opponent's hand.
Draw a card.
{2}
Spell Satchel
Artifact
Magecraft -- Whenever you cast or copy an instant or sorcery spell, put a book counter on Spell Satchel.
{T}, Remove a book counter from Spell Satchel: Add {C}.
{3}, {T}, Remove three book counters from Spell Satchel: Draw a card.
{0}
Spellbook
Artifact
You have no maximum hand size.
{3}{U}{U}{U}
Spelljack
Instant
Counter target spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard. You may play it without paying its mana cost for as long as it remains exiled. (If it has X in its mana cost, X is 0.)
{3}
Staff of the Mind Magus
Artifact
Whenever you cast a blue spell or an Island enters the battlefield under your control, you gain 1 life.
{2}
Suspicious Bookcase
Artifact Creature - Wall
Defender
{3}, {T}: Target creature can't be blocked this turn.
0 /
4
{2}{U}
Teferi's Protege
Creature - Human Wizard
{1}{U}, {T}: Draw a card, then discard a card.
2 /
3
{3}{U}
Tome Anima
Creature - Spirit
Tome Anima can't be blocked as long as you've drawn two or more cards this turn.
3 /
3
{5}
Tome of the Guildpact
Artifact
Whenever you cast a multicolored spell, draw a card.
{T}: Add one mana of any color.
{2}{U}
Trail of Evidence
Enchantment
Whenever you cast an instant or sorcery spell, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")
{1}{U}
Unblinking Observer
Creature - Homunculus
{T}: Add {U}. Spend this mana only to pay a disturb cost or cast an instant or sorcery spell.
2 /
1
{2}{U}
Words of Wind
Enchantment
{1}: The next time you would draw a card this turn, each player returns a permanent they control to its owner's hand instead.
{2}{U}
Wrong Turn
Instant
Target opponent gains control of target creature. (If an attacking or blocking creature changes controllers, it's removed from combat.)
{1}{U}{U}
You Find the Villains' Lair
Instant
Choose one --
• Foil Their Scheme -- Counter target spell.
• Learn Their Secrets -- Draw two cards, then discard two cards.