Threshold -- Enchanted creature has shroud as long as seven or more cards are in your graveyard. (It can't be the target of spells or abilities.)
{3}{U}{U}
Aether Gale
Sorcery
Return six target nonland permanents to their owners' hands.
{3}{U}
Aetherize
Instant
Return all attacking creatures to their owner's hand.
{4}{U}
Arcane Melee
Enchantment
Instant and sorcery spells cost {2} less to cast.
{1}{U}{R}
Bloodwater Entity
Creature - Elemental
Flying
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
When Bloodwater Entity enters the battlefield, you may put target instant or sorcery card from your graveyard on top of your library.
2 /
2
{X}{R}
By Force
Sorcery
Destroy X target artifacts.
{1}{U}{U}
Cancel
Instant
Counter target spell.
{U/R}
Clout of the Dominus
Enchantment - Aura
Enchant creature
As long as enchanted creature is blue, it gets +1/+1 and has shroud. (It can't be the target of spells or abilities.)
As long as enchanted creature is red, it gets +1/+1 and has haste.
{U}
Crab Umbra
Enchantment - Aura
Enchant creature
{2}{U}: Untap enchanted creature.
Totem armor (If enchanted creature would be destroyed, instead remove all damage from it and destroy this Aura.)
{R}
Crash Through
Sorcery
Creatures you control gain trample until end of turn. (A creature with trample can deal excess combat damage to the player or planeswalker it's attacking.)
Draw a card.
{R}
Crimson Wisps
Instant
Target creature becomes red and gains haste until end of turn.
Draw a card.
{3}
Cryptolith Fragment
Artifact
Cryptolith Fragment enters the battlefield tapped.
{T}: Add one mana of any color. Each player loses 1 life.
At the beginning of your upkeep, if each player has 10 or less life, transform Cryptolith Fragment.
--
Aurora of Emrakul
Creature - Eldrazi Reflection
Flying, deathtouch
Whenever Aurora of Emrakul attacks, each opponent loses 3 life.
{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
{X}{U}{U}
Curse of the Swine
Sorcery
Exile X target creatures. For each creature exiled this way, its controller creates a 2/2 green Boar creature token.
{3}
Darksteel Ingot
Artifact
Indestructible
{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.)
{1}{U}{U}
Dream Fracture
Instant
Counter target spell. Its controller draws a card.
Draw a card.
{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}
Eel Umbra
Enchantment - Aura
Flash (You may cast this spell any time you could cast an instant.)
Enchant creature
Enchanted creature gets +1/+1.
Totem armor (If enchanted creature would be destroyed, instead remove all damage from it and destroy this Aura.)
{1}
Elixir of Immortality
Artifact
{2}, {T}: You gain 5 life. Shuffle Elixir of Immortality and your graveyard into their owner's library.
{R}
Expedite
Instant
Target creature gains haste until end of turn.
Draw a card.
{2}{U}
Fade Away
Sorcery
For each creature, its controller sacrifices a permanent unless they pay {1}.
{2}
Fellwar Stone
Artifact
{T}: Add one mana of any color that a land an opponent controls could produce.
{1}{R}
Firebrand Archer
Creature - Human Archer
Whenever you cast a noncreature spell, Firebrand Archer deals 1 damage to each opponent.
2 /
1
{2}{U}{U}{U}
Future Sight
Enchantment
Play with the top card of your library revealed.
You may play lands and cast spells from the top of your library.
{1}{U}{R}
Gelectrode
Creature - Weird
{T}: Gelectrode deals 1 damage to any target.
Whenever you cast an instant or sorcery spell, you may untap Gelectrode.
0 /
1
{U}{R}
Goblin Electromancer
Creature - Goblin Wizard
Instant and sorcery spells you cast cost {1} less to cast.
2 /
2
{2}{R}
Goblinslide
Enchantment
Whenever you cast a noncreature spell, you may pay {1}. If you do, create a 1/1 red Goblin creature token with haste.
{2}{R}
Guttersnipe
Creature - Goblin Shaman
Whenever you cast an instant or sorcery spell, Guttersnipe deals 2 damage to each opponent.
2 /
2
--
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}.)
{U}{R}
Izzet Charm
Instant
Choose one --
• Counter target noncreature spell unless its controller pays {2}.
• Izzet Charm deals 2 damage to target creature.
• Draw two cards, then discard two cards.
{3}
Izzet Cluestone
Artifact
{T}: Add {U} or {R}.
{U}{R}, {T}, Sacrifice Izzet Cluestone: Draw a card.
{3}
Izzet Keyrune
Artifact
{T}: Add {U} or {R}.
{U}{R}: Until end of turn, Izzet Keyrune becomes a 2/1 blue and red Elemental artifact creature.
Whenever Izzet Keyrune deals combat damage to a player, you may draw a card. If you do, discard a card.
{2}
Izzet Signet
Artifact
{1}, {T}: Add {U}{R}.
{3}{U}{U}
Jace's Ingenuity
Instant
Draw three cards.
{1}{U}{R}
Jori En, Ruin Diver
Legendary Creature - Merfolk Wizard
Whenever you cast your second spell each turn, draw a card.
2 /
3
{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.
{R}
Magmatic Insight
Sorcery
As an additional cost to cast this spell, discard a land card.
Draw two cards.
{3}{R}{R}
Mana Geyser
Sorcery
Add {R} for each tapped land your opponents control.
{2}{U}{R}
Mercurial Geists
Creature - Spirit
Flying
Whenever you cast an instant or sorcery spell, Mercurial Geists gets +3/+0 until end of turn.
1 /
3
{X}{U}{U}
Mind Spring
Sorcery
Draw X cards.
{1}{R}
Mizzium Mortars
Sorcery
Mizzium Mortars deals 4 damage to target creature you don't control.
Overload {3}{R}{R}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
{1}{U}
Negate
Instant
Counter target noncreature spell.
{2}{U}{U}
Niblis of Frost
Creature - Spirit
Flying
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Whenever you cast an instant or sorcery spell, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.
3 /
3
{2}{U}{U}{R}{R}
Niv-Mizzet, Dracogenius
Legendary Creature - Dragon Wizard
Flying
Whenever Niv-Mizzet, Dracogenius deals damage to a player, you may draw a card.
{U}{R}: Niv-Mizzet, Dracogenius deals 1 damage to any target.
5 /
5
{1}{U}{R}
Nivix Cyclops
Creature - Cyclops
Defender
Whenever you cast an instant or sorcery spell, Nivix Cyclops gets +3/+0 until end of turn and can attack this turn as though it didn't have defender.
1 /
4
{1}{U}
Omen
Sorcery
Look at the top three cards of your library, then put them back in any order. You may shuffle.
Draw a card.
{U}
Peek
Instant
Look at target player's hand.
Draw a card.
{1}{R}
Psychotic Fury
Instant
Target multicolored creature gains double strike until end of turn.
Draw a card.
{3}{R}
Pyre Hound
Creature - Elemental Dog
Trample
Whenever you cast an instant or sorcery spell, put a +1/+1 counter on Pyre Hound.
2 /
3
{U}
Quicken
Instant
The next sorcery spell you cast this turn can be cast as though it had flash. (It can be cast any time you could cast an instant.)
Draw a card.
{1}{U}
Reality Shift
Instant
Exile target creature. Its controller manifests the top card of their library. (That player puts the top card of their library onto the battlefield face down as a 2/2 creature. If it's a creature card, it can be turned face up any time for its mana cost.)
{2}{U}{U}
Rewind
Instant
Counter target spell. Untap up to four lands.
{5}{U}
Rise from the Tides
Sorcery
Create a tapped 2/2 black Zombie creature token for each instant and sorcery card in your graveyard.
{U}
Slip Through Space
Sorcery
Devoid (This card has no color.)
Target creature can't be blocked this turn.
Draw a card.
{0}
Spellbook
Artifact
You have no maximum hand size.
{7}
Sphinx-Bone Wand
Artifact
Whenever you cast an instant or sorcery spell, you may put a charge counter on Sphinx-Bone Wand. If you do, Sphinx-Bone Wand deals damage equal to the number of charge counters on it to any target.
{2}
Star Compass
Artifact
Star Compass enters the battlefield tapped.
{T}: Add one mana of any color that a basic land you control could produce.
{U}{R}
Stormchaser Mage
Creature - Human Wizard
Flying, haste
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
1 /
3
{6}{U}
Swarm Intelligence
Enchantment
Whenever you cast an instant or sorcery spell, you may copy that spell. You may choose new targets for the copy.
{U}{R}
Teleportal
Sorcery
Target creature you control gets +1/+0 until end of turn and can't be blocked this turn.
Overload {3}{U}{R} (You may cast this spell for its overload cost. If you do, change its text by replacing all instances of "target" with "each.")
{1}{U}
Telling Time
Instant
Look at the top three cards of your library. Put one of those cards into your hand, one on top of your library, and one on the bottom of your library.
{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.)
{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.
{2}{U}{ // }{1}{R}
Turn // Burn
Instant // Instant
Until end of turn, target creature loses all abilities and becomes a red Weird with base power and toughness 0/1.
Fuse (You may cast one or both halves of this card from your hand.)
Burn deals 2 damage to any target.
Fuse (You may cast one or both halves of this card from your hand.)
{1}
Wayfarer's Bauble
Artifact
{2}, {T}, Sacrifice Wayfarer's Bauble: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.
{1}{U}{R}
Wee Dragonauts
Creature - Faerie Wizard
Flying
Whenever you cast an instant or sorcery spell, Wee Dragonauts gets +2/+0 until end of turn.