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}{B}
Animate Dead
Enchantment - Aura
Enchant creature card in a graveyard
When Animate Dead enters the battlefield, if it's on the battlefield, it loses "enchant creature card in a graveyard" and gains "enchant creature put onto the battlefield with Animate Dead." Return enchanted creature card to the battlefield under your control and attach Animate Dead to it. When Animate Dead leaves the battlefield, that creature's controller sacrifices it.
Enchanted creature gets -1/-0.
{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
{4}{U}{U}
Archetype of Imagination
Enchantment Creature - Human Wizard
Creatures you control have flying.
Creatures your opponents control lose flying and can't have or gain flying.
3 /
2
{9}
Artisan of Kozilek
Creature - Eldrazi
When you cast this spell, you may return target creature card from your graveyard to the battlefield.
Annihilator 2 (Whenever this creature attacks, defending player sacrifices two permanents.)
10 /
9
--
Bojuka Bog
Land
Bojuka Bog enters the battlefield tapped.
When Bojuka Bog enters the battlefield, exile target player's graveyard.
{T}: Add {B}.
{2}{U}
Bonded Fetch
Creature - Homunculus
Defender, haste
{T}: Draw a card, then discard a card.
0 /
2
{2}{B}
Buried Alive
Sorcery
Search your library for up to three creature cards, put them into your graveyard, then shuffle.
{3}
Burnished Hart
Artifact Creature - Elk
{3}, Sacrifice Burnished Hart: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.
2 /
2
{6}
Caged Sun
Artifact
As Caged Sun enters the battlefield, choose a color.
Creatures you control of the chosen color get +1/+1.
Whenever a land's ability causes you to add one or more mana of the chosen color, add one additional mana of that color.
{2}{U}{U}
Careful Consideration
Instant
Target player draws four cards, then discards three cards. If you cast this spell during your main phase, instead that player draws four cards, then discards two cards.
{U}
Careful Study
Sorcery
Draw two cards, then discard two cards.
--
Choked Estuary
Land
As Choked Estuary enters the battlefield, you may reveal an Island or Swamp card from your hand. If you don't, Choked Estuary enters the battlefield tapped.
{T}: Add {U} or {B}.
{0}
Chrome Mox
Artifact
Imprint -- When Chrome Mox enters the battlefield, you may exile a nonartifact, nonland card from your hand.
{T}: Add one mana of any of the exiled card's colors.
--
Command Tower
Land
{T}: Add one mana of any color in your commander's color identity.
{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.
{3}{U}{B}
Consuming Aberration
Creature - Horror
Consuming Aberration's power and toughness are each equal to the number of cards in your opponents' graveyards.
Whenever you cast a spell, each opponent reveals cards from the top of their library until they reveal a land card, then puts those cards into their graveyard.
* /
*
{4}{B}
Corpse Connoisseur
Creature - Zombie Wizard
When Corpse Connoisseur enters the battlefield, you may search your library for a creature card, put that card into your graveyard, then shuffle.
Unearth {3}{B} ({3}{B}: 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.)
3 /
3
{U}{U}
Counterspell
Instant
Counter target spell.
{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.")
{2}{B}{B}
Damnation
Sorcery
Destroy all creatures. They can't be regenerated.
{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}.
{1}{B}
Demonic Tutor
Sorcery
Search your library for a card, put that card into your hand, then shuffle.
{2}
Dimir Signet
Artifact
{1}, {T}: Add {U}{B}.
{1}{U}{U}
Disallow
Instant
Counter target spell, activated ability, or triggered ability. (Mana abilities can't be targeted.)
{3}{B}{B}
Doom Whisperer
Creature - Nightmare Demon
Flying, trample
Pay 2 life: 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.)
6 /
6
--
Drowned Catacomb
Land
Drowned Catacomb enters the battlefield tapped unless you control an Island or a Swamp.
{T}: Add {U} or {B}.
{B}
Entomb
Instant
Search your library for a card, put that card into your graveyard, then shuffle.
{1}{B}
Exhume
Sorcery
Each player puts a creature card from their graveyard onto the battlefield.
{2}
Fellwar Stone
Artifact
{T}: Add one mana of any color that a land an opponent controls could produce.
--
Fetid Pools
Land - Island Swamp
({T}: Add {U} or {B}.)
Fetid Pools enters the battlefield tapped.
Cycling {2} ({2}, Discard this card: Draw a card.)
{3}{B}{B}
Final Parting
Sorcery
Search your library for two cards. Put one into your hand and the other into your graveyard. Then shuffle.
{1}{U}{U}
Forbid
Instant
Buyback--Discard two cards. (You may discard two cards in addition to any other costs as you cast this spell. If you do, put this card into your hand as it resolves.)
Counter target spell.
{2}{U}
Frantic Search
Instant
Draw two cards, then discard two cards. Untap up to three lands.
--
Geier Reach Sanitarium
Legendary Land
{T}: Add {C}.
{2}, {T}: Each player draws a card, then discards a card.
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)
2 /
2
{2}{U}
Imprisoned in the Moon
Enchantment - Aura
Enchant creature, land, or planeswalker
Enchanted permanent is a colorless land with "{T}: Add {C}" and loses all other card types and abilities.
--
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}.)
{8}{U}{U}
Jin-Gitaxias, Core Augur
Legendary Creature - Phyrexian Praetor
Flash
At the beginning of your end step, draw seven cards.
Each opponent's maximum hand size is reduced by seven.
5 /
4
{4}{B}{B}
Kokusho, the Evening Star
Legendary Creature - Dragon Spirit
Flying
When Kokusho, the Evening Star dies, each opponent loses 5 life. You gain life equal to the life lost this way.
5 /
5
{2}{U}
Laboratory Maniac
Creature - Human Wizard
If you would draw a card while your library has no cards in it, you win the game instead.
2 /
2
{4}{B}{B}
Life's Finale
Sorcery
Destroy all creatures, then search target opponent's library for up to three creature cards and put them into their graveyard. Then that player shuffles.
{3}{B}{B}
Liliana, Death's Majesty
Legendary Planeswalker - Liliana
+1: Create a 2/2 black Zombie creature token. Mill two cards.
-3: Return target creature card from your graveyard to the battlefield. That creature is a black Zombie in addition to its other colors and types.
-7: Destroy all non-Zombie creatures.
L:
5
{3}{B}{B}
Living Death
Sorcery
Each player exiles all creature cards from their graveyard, then sacrifices all creatures they control, then puts all cards they exiled this way onto the battlefield.
{2}
Mind Stone
Artifact
{T}: Add {C}.
{1}, {T}, Sacrifice Mind Stone: Draw a card.
{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.
{2}{B}
Necromancy
Enchantment
You may cast Necromancy as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step.
When Necromancy enters the battlefield, if it's on the battlefield, it becomes an Aura with "enchant creature put onto the battlefield with Necromancy." Put target creature card from a graveyard onto the battlefield under your control and attach Necromancy to it. When Necromancy leaves the battlefield, that creature's controller sacrifices it.
--
Nephalia Drownyard
Land
{T}: Add {C}.
{1}{U}{B}, {T}: Target player mills three cards.
{5}{U}{U}
Nezahal, Primal Tide
Legendary Creature - Elder Dinosaur
This spell can't be countered.
You have no maximum hand size.
Whenever an opponent casts a noncreature spell, draw a card.
Discard three cards: Exile Nezahal, Primal Tide. Return it to the battlefield tapped under its owner's control at the beginning of the next end step.
7 /
7
{11}
Pathrazer of Ulamog
Creature - Eldrazi
Annihilator 3 (Whenever this creature attacks, defending player sacrifices three permanents.)
Pathrazer of Ulamog can't be blocked except by three or more creatures.
9 /
9
--
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.
{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}
Rapid Hybridization
Instant
Destroy target creature. It can't be regenerated. That creature's controller creates a 3/3 green Frog Lizard creature token.
{2}{B}{B}
Ravenous Chupacabra
Creature - Beast Horror
When Ravenous Chupacabra enters the battlefield, destroy target creature an opponent controls.
2 /
2
{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.)
{B}
Reanimate
Sorcery
Put target creature card from a graveyard onto the battlefield under your control. You lose life equal to its mana value.
{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.
--
Seat of the Synod
Artifact Land
{T}: Add {U}.
{5}{B}{B}
Sheoldred, Whispering One
Legendary Creature - Phyrexian Praetor
Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)
At the beginning of your upkeep, return target creature card from your graveyard to the battlefield.
At the beginning of each opponent's upkeep, that player sacrifices a creature.
6 /
6
{3}{B}{B}
Sidisi, Undead Vizier
Legendary Creature - Zombie Naga
Deathtouch
Exploit (When this creature enters the battlefield, you may sacrifice a creature.)
When Sidisi, Undead Vizier exploits a creature, you may search your library for a card, put it into your hand, then shuffle.
4 /
6
{0}
Slaughter Pact
Instant
Destroy target nonblack creature.
At the beginning of your next upkeep, pay {2}{B}. If you don't, you lose the game.
{1}
Sol Ring
Artifact
{T}: Add {C}{C}.
{4}
Solemn Simulacrum
Artifact Creature - Golem
When Solemn Simulacrum enters the battlefield, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.
When Solemn Simulacrum dies, you may draw a card.
2 /
2
--
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}.)
--
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}.)
--
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}.)
{3}{U}{B}
Taigam, Sidisi's Hand
Legendary Creature - Human Wizard
Skip your draw step.
At the beginning of your upkeep, look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard.
{B}, {T}, Exile X cards from your graveyard: Target creature gets -X/-X until end of turn.
3 /
4
{2}
Talisman of Dominance
Artifact
{T}: Add {C}.
{T}: Add {U} or {B}. Talisman of Dominance deals 1 damage to you.
--
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}.
{1}{U}
Tolarian Winds
Instant
Discard all the cards in your hand, then draw that many cards.
{2}{B}
Toxic Deluge
Sorcery
As an additional cost to cast this spell, pay X life.
All creatures get -X/-X until end of turn.
{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
--
Underground River
Land
{T}: Add {C}.
{T}: Add {U} or {B}. Underground River deals 1 damage to you.
--
Vault of Whispers
Artifact Land
{T}: Add {B}.
{2}{B}
Victimize
Sorcery
Choose two target creature cards in your graveyard. Sacrifice a creature. If you do, return the chosen cards to the battlefield tapped.
{9}
Void Winnower
Creature - Eldrazi
Your opponents can't cast spells with even mana values. (Zero is even.)
Your opponents can't block with creatures with even mana values.
11 /
9
--
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.
{2}{U}{B}
Whispering Madness
Sorcery
Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.
Cipher (Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.)
{2}{U}
Windfall
Sorcery
Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.
{2}{B}{B}
Xiahou Dun, the One-Eyed
Legendary Creature - Human Soldier
Horsemanship (This creature can't be blocked except by creatures with horsemanship.)
Sacrifice Xiahou Dun, the One-Eyed: Return target black card from your graveyard to your hand. Activate only during your turn, before attackers are declared.
3 /
2
{3}{B}{B}{B}
Bolas's Citadel
Legendary Artifact
You may look at the top card of your library any time.
You may play lands and cast spells from the top of your library. If you cast a spell this way, pay life equal to its mana value rather than pay its mana cost.
{T}, Sacrifice ten nonland permanents: Each opponent loses 10 life.
{2}{U}
Champion of Wits
Creature - Naga Wizard
When Champion of Wits enters the battlefield, you may draw cards equal to its power. If you do, discard two cards.
Eternalize {5}{U}{U} ({5}{U}{U}, Exile this card from your graveyard: Create a token that's a copy of it, except it's a 4/4 black Zombie Naga Wizard with no mana cost. Eternalize only as a sorcery.)
2 /
1
{1}{B}
Dance of the Dead
Enchantment - Aura
Enchant creature card in a graveyard
When Dance of the Dead enters the battlefield, if it's on the battlefield, it loses "enchant creature card in a graveyard" and gains "enchant creature put onto the battlefield with Dance of the Dead." Put enchanted creature card onto the battlefield tapped under your control and attach Dance of the Dead to it. When Dance of the Dead leaves the battlefield, that creature's controller sacrifices it.
Enchanted creature gets +1/+1 and doesn't untap during its controller's untap step.
At the beginning of the upkeep of enchanted creature's controller, that player may pay {1}{B}. If the player does, untap that creature.
{2}{B}
Dark Deal
Sorcery
Each player discards all the cards in their hand, then draws that many cards minus one.
--
Exotic Orchard
Land
{T}: Add one mana of any color that a land an opponent controls could produce.
{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.
{4}
Hedron Archive
Artifact
{T}: Add {C}{C}.
{2}, {T}, Sacrifice Hedron Archive: Draw two cards.
{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
{1}{U}{B}
Perplex
Instant
Counter target spell unless its controller discards their hand.
Transmute {1}{U}{B} ({1}{U}{B}, 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}{B}
Sire of Stagnation
Creature - Eldrazi
Devoid (This card has no color.)
Whenever a land enters the battlefield under an opponent's control, that player exiles the top two cards of their library and you draw two cards.
5 /
7
{5}{U}{U}
Sphinx Ambassador
Creature - Sphinx
Flying
Whenever Sphinx Ambassador deals combat damage to a player, search that player's library for a card, then that player chooses a card name. If you searched for a creature card that doesn't have that name, you may put it onto the battlefield under your control. Then that player shuffles.
5 /
5
{U}
Swan Song
Instant
Counter target enchantment, instant, or sorcery spell. Its controller creates a 2/2 blue Bird creature token with flying.