Draw cards equal to the number of cards in your hand, then discard a card for each card drawn this way.
Basic landcycling {2} ({2}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)
{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
{U}
Blustersquall
Instant
Tap target creature you don't control.
Overload {3}{U} (You may cast this spell for its overload cost. If you do, change its text by replacing all instances of "target" with "each.")
--
Bojuka Bog
Land
Bojuka Bog enters the battlefield tapped.
When Bojuka Bog enters the battlefield, exile target player's graveyard.
{T}: Add {B}.
{X}{X}{R}
Bonfire of the Damned
Sorcery
Bonfire of the Damned deals X damage to target player or planeswalker and each creature that player or that planeswalker's controller controls.
Miracle {X}{R} (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)
{2}
Brain in a Jar
Artifact
{1}, {T}: Put a charge counter on Brain in a Jar, then you may cast an instant or sorcery spell with mana value equal to the number of charge counters on Brain in a Jar from your hand without paying its mana cost.
{3}, {T}, Remove X charge counters from Brain in a Jar: Scry X.
{1}{B}
Cabal Ritual
Instant
Add {B}{B}{B}.
Threshold -- Add {B}{B}{B}{B}{B} instead if seven or more cards are in your graveyard.
{R}
Chain Lightning
Sorcery
Chain Lightning deals 3 damage to any target. Then that player or that permanent's controller may pay {R}{R}. If the player does, they may copy this spell and may choose a new target for that copy.
{2}{R}{R}
Chain Reaction
Sorcery
Chain Reaction deals X damage to each creature, where X is the number of creatures on the battlefield.
{3}
Chromatic Lantern
Artifact
Lands you control have "{T}: Add one mana of any color."
{T}: Add one mana of any color.
--
Command Tower
Land
{T}: Add one mana of any color in your commander's color identity.
{U}{U}{R}
Counterflux
Instant
This spell can't be countered.
Counter target spell you don't control.
Overload {1}{U}{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.")
{U}{B}{R}
Crosis's Charm
Instant
Choose one --
• Return target permanent to its owner's hand.
• Destroy target nonblack creature. It can't be regenerated.
• Destroy target artifact.
--
Crumbling Necropolis
Land
Crumbling Necropolis enters the battlefield tapped.
{T}: Add {U}, {B}, or {R}.
{3}{B}{B}
Dark Petition
Sorcery
Search your library for a card, put that card into your hand, then shuffle.
Spell mastery -- If there are two or more instant and/or sorcery cards in your graveyard, add {B}{B}{B}.
{B}
Dark Ritual
Instant
Add {B}{B}{B}.
{6}{B}{B}
Decree of Pain
Sorcery
Destroy all creatures. They can't be regenerated. Draw a card for each creature destroyed this way.
Cycling {3}{B}{B} ({3}{B}{B}, Discard this card: Draw a card.)
When you cycle Decree of Pain, all creatures get -2/-2 until end of turn.
--
Desolate Lighthouse
Land
{T}: Add {C}.
{1}{U}{R}, {T}: Draw a card, then discard a card.
{3}{U}{U}
Docent of Perfection
Creature - Insect Horror
Flying
Whenever you cast an instant or sorcery spell, create a 1/1 blue Human Wizard creature token. Then if you control three or more Wizards, transform Docent of Perfection.
5 /
4
--
Final Iteration
Creature - Eldrazi Insect
Flying
Wizards you control get +2/+1 and have flying.
Whenever you cast an instant or sorcery spell, create a 1/1 blue Human Wizard creature token.
5 /
4
{3}{U}
Fact or Fiction
Instant
Reveal the top five cards of your library. An opponent separates those cards into two piles. Put one pile into your hand and the other into your graveyard.
{2}
Fellwar Stone
Artifact
{T}: Add one mana of any color that a land an opponent controls could produce.
{2}{U}
Forbidden Alchemy
Instant
Look at the top four cards of your library. Put one of them into your hand and the rest into your graveyard.
Flashback {6}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
{2}{U}
Frantic Search
Instant
Draw two cards, then discard two cards. Untap up to three lands.
{U}{R}
Goblin Electromancer
Creature - Goblin Wizard
Instant and sorcery spells you cast cost {1} less to cast.
2 /
2
{4}{B}{R}
Grave Upheaval
Sorcery
Put target creature card from a graveyard onto the battlefield under your control. It gains haste.
Basic landcycling {2} ({2}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)
{2}{R}
Guttersnipe
Creature - Goblin Shaman
Whenever you cast an instant or sorcery spell, Guttersnipe deals 2 damage to each opponent.
2 /
2
{4}{B}
Increasing Ambition
Sorcery
Search your library for a card and put that card into your hand. If this spell was cast from a graveyard, instead search your library for two cards and put those cards into your hand. Then shuffle.
Flashback {7}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
{R}{R}
Increasing Vengeance
Instant
Copy target instant or sorcery spell you control. If this spell was cast from a graveyard, copy that spell twice instead. You may choose new targets for the copies.
Flashback {3}{R}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
{X}{U}{U}{R}
Invoke the Firemind
Sorcery
Choose one --
• Draw X cards.
• Invoke the Firemind deals X damage to any target.
--
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}.)
--
Izzet Boilerworks
Land
Izzet Boilerworks enters the battlefield tapped.
When Izzet Boilerworks enters the battlefield, return a land you control to its owner's hand.
{T}: Add {U}{R}.
--
Izzet Guildgate
Land - Gate
Izzet Guildgate enters the battlefield tapped.
{T}: Add {U} or {R}.
{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.
{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.)
{1}{U}{B}{R}
Kess, Dissident Mage
Legendary Creature - Human Wizard
Flying
Once during each of your turns, you may cast an instant or sorcery spell from your graveyard. If a spell cast this way would be put into your graveyard, exile it instead.
3 /
4
{2}
Lightning Greaves
Artifact - Equipment
Equipped creature has haste and shroud. (It can't be the target of spells or abilities.)
Equip {0}
{1}{U}{R}
Ludevic, Necro-Alchemist
Legendary Creature - Human Wizard
At the beginning of each player's end step, that player may draw a card if a player other than you lost life this turn.
Partner (You can have two commanders if both have partner.)
1 /
4
{3}{R}{R}
Mana Geyser
Sorcery
Add {R} for each tapped land your opponents control.
{4}{U}{R}
Melek, Izzet Paragon
Legendary Creature - Weird Wizard
Play with the top card of your library revealed.
You may cast instant and sorcery spells from the top of your library.
Whenever you cast an instant or sorcery spell from your library, copy it. You may choose new targets for the copy.
2 /
4
{3}{U}{U}
Metallurgic Summonings
Enchantment
Whenever you cast an instant or sorcery spell, create an X/X colorless Construct artifact creature token, where X is that spell's mana value.
{3}{U}{U}, Exile Metallurgic Summonings: Return all instant and sorcery cards from your graveyard to your hand. Activate only if you control six or more artifacts.
{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.")
{X}{R}{R}
Molten Disaster
Sorcery
Kicker {R} (You may pay an additional {R} as you cast this spell.)
If this spell was kicked, it has split second. (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)
Molten Disaster deals X damage to each creature without flying and each player.
--
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}.)
{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}
Mystical Tutor
Instant
Search your library for an instant or sorcery card, reveal it, then shuffle and put that card on top.
{4}
Nevinyrral's Disk
Artifact
Nevinyrral's Disk enters the battlefield tapped.
{1}, {T}: Destroy all artifacts, creatures, and enchantments.
{1}{B}
Nightscape Familiar
Creature - Zombie
Blue spells and red spells you cast cost {1} less to cast.
{1}{B}: Regenerate Nightscape Familiar.
1 /
1
{2}{U}{B}
Notion Thief
Creature - Human Rogue
Flash
If an opponent would draw a card except the first one they draw in each of their draw steps, instead that player skips that draw and you draw a card.
3 /
1
{4}
Primal Amulet
Artifact
Instant and sorcery spells you cast cost {1} less to cast.
Whenever you cast an instant or sorcery spell, put a charge counter on Primal Amulet. Then if there are four or more charge counters on it, you may remove those counters and transform it.
--
Primal Wellspring
Land
(Transforms from Primal Amulet.)
{T}: Add one mana of any color. When that mana is spent to cast an instant or sorcery spell, copy that spell and you may choose new targets for the copy.
{5}
Psychosis Crawler
Artifact Creature - Phyrexian Horror
Psychosis Crawler's power and toughness are each equal to the number of cards in your hand.
Whenever you draw a card, each opponent loses 1 life.
* /
*
{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.
{2}{U}{R}
Ral Zarek
Legendary Planeswalker - Ral
+1: Tap target permanent, then untap another target permanent.
-2: Ral Zarek deals 3 damage to any target.
-7: Flip five coins. Take an extra turn after this one for each coin that comes up heads.
L:
4
{U}
Rapid Hybridization
Instant
Destroy target creature. It can't be regenerated. That creature's controller creates a 3/3 green Frog Lizard creature token.
{3}{B}{B}
Razaketh's Rite
Sorcery
Search your library for a card, put that card into your hand, then shuffle.
Cycling {B} ({B}, Discard this card: Draw a card.)
{1}{R}{R}
Reiterate
Instant
Buyback {3} (You may pay an additional {3} as you cast this spell. If you do, put this card into your hand as it resolves.)
Copy target instant or sorcery spell. You may choose new targets for the copy.
{1}{U}{U}
Relearn
Sorcery
Return target instant or sorcery card from your graveyard to your hand.
--
Reliquary Tower
Land
You have no maximum hand size.
{T}: Add {C}.
--
Riptide Laboratory
Land
{T}: Add {C}.
{1}{U}, {T}: Return target Wizard you control to its owner's hand.
{2}{U}{U}
Rite of Replication
Sorcery
Kicker {5} (You may pay an additional {5} as you cast this spell.)
Create a token that's a copy of target creature. If this spell was kicked, create five of those tokens instead.
{X}{R}{R}
Rolling Thunder
Sorcery
Rolling Thunder deals X damage divided as you choose among any number of targets.
{2}{U}
Secrets of the Dead
Enchantment
Whenever you cast a spell from your graveyard, draw a card.
{U}
Serum Visions
Sorcery
Draw a card. Scry 2.
{1}
Sol Ring
Artifact
{T}: Add {C}{C}.
{2}{U}{R}
Steam Augury
Instant
Reveal the top five cards of your library and separate them into two piles. An opponent chooses one of those piles. Put that pile into your hand and the other into your graveyard.
--
Steam Vents
Land - Island Mountain
({T}: Add {U} or {R}.)
As Steam Vents enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
{1}{U}{R}
Stitch in Time
Sorcery
Flip a coin. If you win the flip, take an extra turn after this one.
{X}{R}
Street Spasm
Instant
Street Spasm deals X damage to target creature without flying you don't control.
Overload {X}{X}{R}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Temple of Deceit
Land
Temple of Deceit enters the battlefield tapped.
When Temple of Deceit enters the battlefield, scry 1.
{T}: Add {U} or {B}.
--
Temple of Epiphany
Land
Temple of Epiphany enters the battlefield tapped.
When Temple of Epiphany enters the battlefield, scry 1.
{T}: Add {U} or {R}.
--
Temple of Malice
Land
Temple of Malice enters the battlefield tapped.
When Temple of Malice enters the battlefield, scry 1.
{T}: Add {B} or {R}.
{5}{U}{U}
Temporal Mastery
Sorcery
Take an extra turn after this one. Exile Temporal Mastery.
Miracle {1}{U} (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)
{2}
Thaumatic Compass
Artifact
{3}, {T}: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.
At the beginning of your end step, if you control seven or more lands, transform Thaumatic Compass.
--
Spires of Orazca
Land
(Transforms from Thaumatic Compass.)
{T}: Add {C}.
{T}: Untap target attacking creature an opponent controls and remove it from combat.
{4}
Thran Dynamo
Artifact
{T}: Add {C}{C}{C}.
{X}{R}{R}
Titan's Revenge
Sorcery
Titan's Revenge deals X damage to any target. Clash with an opponent. If you win, return Titan's Revenge to its owner's hand. (Each clashing player reveals the top card of their library, then puts that card on the top or bottom. A player wins if their card had a higher mana value.)
{1}{B}{R}
Unlicensed Disintegration
Instant
Destroy target creature. If you control an artifact, Unlicensed Disintegration deals 3 damage to that creature's controller.
{R}
Vandalblast
Sorcery
Destroy target artifact you don't control.
Overload {4}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")
{2}{U}
Windfall
Sorcery
Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.
{1}{R}
Young Pyromancer
Creature - Human Shaman
Whenever you cast an instant or sorcery spell, create a 1/1 red Elemental creature token.
2 /
1
{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
{3}{U}{U}
Baral's Expertise
Sorcery
Return up to three target artifacts and/or creatures to their owners' hands.
You may cast a spell with mana value 4 or less from your hand without paying its mana cost.
{2}{R}
Burning Vengeance
Enchantment
Whenever you cast a spell from your graveyard, Burning Vengeance deals 2 damage to any target.
{2}{U}
Call to Mind
Sorcery
Return target instant or sorcery card from your graveyard to your hand.
{2}{R}
Chaos Warp
Instant
The owner of target permanent shuffles it into their library, then reveals the top card of their library. If it's a permanent card, they put it onto the battlefield.
{3}
Dimir Keyrune
Artifact
{T}: Add {U} or {B}.
{U}{B}: Dimir Keyrune becomes a 2/2 blue and black Horror artifact creature until end of turn and can't be blocked this turn.
{X}{U}{R}
Epic Experiment
Sorcery
Exile the top X cards of your library. You may cast instant and sorcery spells with mana value X or less from among them without paying their mana costs. Then put all cards exiled this way that weren't cast into your graveyard.
{U/R}{U/R}
Izzet Guildmage
Creature - Human Wizard
({U/R} can be paid with either {U} or {R}.)
{2}{U}: Copy target instant spell you control with mana value 2 or less. You may choose new targets for the copy.
{2}{R}: Copy target sorcery spell you control with mana value 2 or less. You may choose new targets for the copy.
2 /
2
{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}{B}{B}
Reckless Spite
Instant
Destroy two target nonblack creatures. You lose 5 life.