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.)
{3}{B}{B}
Archfiend of Ifnir
Creature - Demon
Flying
Whenever you cycle or discard another card, put a -1/-1 counter on each creature your opponents control.
Cycling {2} ({2}, Discard this card: Draw a card.)
5 /
4
{3}{B}{B}
Bloodgift Demon
Creature - Demon
Flying
At the beginning of your upkeep, target player draws a card and loses 1 life.
5 /
4
{2}{R}
Browbeat
Sorcery
Any player may have Browbeat deal 5 damage to them. If no one does, target player draws three cards.
{3}{U}
Cephalid Broker
Creature - Cephalid
{T}: Target player draws two cards, then discards two cards.
2 /
2
{2}{U}
Cephalid Looter
Creature - Cephalid Rogue
{T}: Target player draws a card, then discards a card.
2 /
1
{1}{U}{R}
Cerebral Vortex
Instant
Target player draws two cards, then Cerebral Vortex deals damage to that player equal to the number of cards they've drawn this turn.
{1}{R}{R}
Collective Defiance
Sorcery
Escalate {1} (Pay this cost for each mode chosen beyond the first.)
Choose one or more --
• Target player discards all the cards in their hand, then draws that many cards.
• Collective Defiance deals 4 damage to target creature.
• Collective Defiance deals 3 damage to target opponent or planeswalker.
{3}{U}{ // }{4}{U}{U}
Commit // Memory
Instant // Sorcery
Put target spell or nonland permanent into its owner's library second from the top.
Aftermath (Cast this spell only from your graveyard. Then exile it.)
Each player shuffles their hand and graveyard into their library, then draws seven cards.
{X}{B}{B}
Damnable Pact
Sorcery
Target player draws X cards and loses X life.
{2}{B}
Dark Deal
Sorcery
Each player discards all the cards in their hand, then draws that many cards minus one.
{1}{U}{U}
Dictate of Kruphix
Enchantment
Flash
At the beginning of each player's draw step, that player draws an additional card.
{5}{R}{R}
Dragon Mage
Creature - Dragon Wizard
Flying
Whenever Dragon Mage deals combat damage to a player, each player discards their hand, then draws seven cards.
5 /
5
{3}{B}
Fate Unraveler
Enchantment Creature - Hag
Whenever an opponent draws a card, Fate Unraveler deals 1 damage to that player.
3 /
4
{2}{R}{R}
Fateful Showdown
Instant
Fateful Showdown deals damage to any target equal to the number of cards in your hand. Discard all the cards in your hand, then draw that many cards.
{3}{B}
Fell Specter
Creature - Specter
Flying
When Fell Specter enters the battlefield, target opponent discards a card.
Whenever an opponent discards a card, that player loses 2 life.
1 /
3
{1}{U}{R}
Fevered Visions
Enchantment
At the beginning of each player's end step, that player draws a card. If the player is your opponent and has four or more cards in hand, Fevered Visions deals 2 damage to that player.
{4}
Font of Mythos
Artifact
At the beginning of each player's draw step, that player draws two additional cards.
{4}{U}{U}
Forced Fruition
Enchantment
Whenever an opponent casts a spell, that player draws seven cards.
{3}{U}
Forgotten Creation
Creature - Zombie Horror
Skulk (This creature can't be blocked by creatures with greater power.)
At the beginning of your upkeep, you may discard all the cards in your hand. If you do, draw that many cards.
3 /
3
--
Geier Reach Sanitarium
Legendary Land
{T}: Add {C}.
{2}, {T}: Each player draws a card, then discards a card.
{2}{U}
Graceful Adept
Creature - Human Wizard
You have no maximum hand size.
1 /
3
{3}
Howling Golem
Artifact Creature - Golem
Whenever Howling Golem attacks or blocks, each player draws a card.
2 /
3
{2}
Howling Mine
Artifact
At the beginning of each player's draw step, if Howling Mine is untapped, that player draws an additional card.
{3}{R}{R}
Incendiary Command
Sorcery
Choose two --
• Incendiary Command deals 4 damage to target player or planeswalker.
• Incendiary Command deals 2 damage to each creature.
• Destroy target nonbasic land.
• Each player discards all the cards in their hand, then draws that many cards.
--
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}.)
{1}{U}{U}
Jace's Archivist
Creature - Vedalken Wizard
{U}, {T}: Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.
2 /
2
{U}{U}
Kami of the Crescent Moon
Legendary Creature - Spirit
At the beginning of each player's draw step, that player draws an additional card.
1 /
3
{B}
Kederekt Parasite
Creature - Horror
Whenever an opponent draws a card, if you control a red permanent, you may have Kederekt Parasite deal 1 damage to that player.
1 /
1
{4}{R}
Khorvath's Fury
Sorcery
For each player, choose friend or foe. Each friend discards all cards from their hand, then draws that many cards plus one. Khorvath's Fury deals damage to each foe equal to the number of cards in their hand.
{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}
Liliana's Caress
Enchantment
Whenever an opponent discards a card, that player loses 2 life.
{2}{R}
Magus of the Wheel
Creature - Human Wizard
{1}{R}, {T}, Sacrifice Magus of the Wheel: Each player discards their hand, then draws seven cards.
3 /
3
{1}{B}{B}
Master of the Feast
Enchantment Creature - Demon
Flying
At the beginning of your upkeep, each opponent draws a card.
5 /
5
{2}{B}
Megrim
Enchantment
Whenever an opponent discards a card, Megrim deals 2 damage to that player.
{2}
Mindcrank
Artifact
Whenever an opponent loses life, that player mills that many cards. (Damage causes loss of life.)
{U}
Minds Aglow
Sorcery
Join forces -- Starting with you, each player may pay any amount of mana. Each player draws X cards, where X is the total amount of mana paid this way.
{1}{R}{R}
Molten Psyche
Sorcery
Each player shuffles the cards from their hand into their library, then draws that many cards.
Metalcraft -- If you control three or more artifacts, Molten Psyche deals damage to each opponent equal to the number of cards that player has drawn this turn.
--
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}.)
{2}{U}{B}{R}
Nekusar, the Mindrazer
Legendary Creature - Zombie Wizard
At the beginning of each player's draw step, that player draws an additional card.
Whenever an opponent draws a card, Nekusar, the Mindrazer deals 1 damage to that player.
2 /
4
{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
{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
{U}{R}
Nin, the Pain Artist
Legendary Creature - Vedalken Wizard
{X}{U}{R}, {T}: Nin, the Pain Artist deals X damage to target creature. That creature's controller draws X cards.
1 /
1
{2}
Perpetual Timepiece
Artifact
{T}: Mill two cards.
{2}, Exile Perpetual Timepiece: Shuffle any number of target cards from your graveyard into your library.
{6}{B}
Price of Knowledge
Enchantment
Players have no maximum hand size.
At the beginning of each opponent's upkeep, Price of Knowledge deals damage to that player equal to the number of cards in that player's hand.
{X}{U}
Prosperity
Sorcery
Each player draws X cards.
{2}{U}
Psychic Corrosion
Enchantment
Whenever you draw a card, each opponent mills two cards.
{4}{U}
Psychic Spiral
Instant
Shuffle all cards from your graveyard into your library. Target player mills that many cards.
{3}{B}
Raiders' Wake
Enchantment
Whenever an opponent discards a card, that player loses 2 life.
Raid -- At the beginning of your end step, if you attacked this turn, target opponent discards a card.
{3}{R}{R}
Reforge the Soul
Sorcery
Each player discards their hand, then draws seven cards.
Miracle {1}{R} (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)
--
Reliquary Tower
Land
You have no maximum hand size.
{T}: Add {C}.
{2}{R}
Robber Fly
Creature - Insect
Flying
Whenever Robber Fly becomes blocked, defending player discards all the cards in their hand, then draws that many cards.
1 /
1
{2}{B}{B}
Sangromancer
Creature - Vampire Shaman
Flying
Whenever a creature an opponent controls dies, you may gain 3 life.
Whenever an opponent discards a card, you may gain 3 life.
3 /
3
{3}{B}{B}
Seizan, Perverter of Truth
Legendary Creature - Demon Spirit
At the beginning of each player's upkeep, that player loses 2 life and draws two cards.
6 /
5
{B}{B}
Sign in Blood
Sorcery
Target player draws two cards and loses 2 life.
{0}
Spellbook
Artifact
You have no maximum hand size.
--
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}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
{4}
Teferi's Puzzle Box
Artifact
At the beginning of each player's draw step, that player puts the cards in their hand on the bottom of their library in any order, then draws that many cards.
{4}{U}{R}
The Locust God
Legendary Creature - God
Flying
Whenever you draw a card, create a 1/1 blue and red Insect creature token with flying and haste.
{2}{U}{R}: Draw a card, then discard a card.
When The Locust God dies, return it to its owner's hand at the beginning of the next end step.
4 /
4
{2}
Thought Vessel
Artifact
You have no maximum hand size.
{T}: Add {C}.
{1}{U}
Tolarian Winds
Instant
Discard all the cards in your hand, then draw that many cards.
{B}{B}{B}
Underworld Dreams
Enchantment
Whenever an opponent draws a card, Underworld Dreams deals 1 damage to that player.
{5}
Venser's Journal
Artifact
You have no maximum hand size.
At the beginning of your upkeep, you gain 1 life for each card in your hand.
{1}{B}
Waste Not
Enchantment
Whenever an opponent discards a creature card, create a 2/2 black Zombie creature token.
Whenever an opponent discards a land card, add {B}{B}.
Whenever an opponent discards a noncreature, nonland card, draw a card.
{3}{U}
Wheel and Deal
Instant
Any number of target opponents each discard their hands, then draw seven cards.
Draw a card.
{2}{U}
Whirlpool Warrior
Creature - Merfolk Warrior
When Whirlpool Warrior enters the battlefield, shuffle the cards from your hand into your library, then draw that many cards.
{R}, Sacrifice Whirlpool Warrior: Each player shuffles the cards from their hand into their library, then draws that many cards.
2 /
2
{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.
{R}
Winds of Change
Sorcery
Each player shuffles the cards from their hand into their library, then draws that many cards.
{2}{U}
Wistful Thinking
Sorcery
Target player draws two cards, then discards four cards.
{3}{R}
Barbed Shocker
Creature - Insect
Trample, haste
Whenever Barbed Shocker deals damage to a player, that player discards all the cards in their hand, then draws that many cards.
2 /
2
{1}{U}{B}
Consult the Necrosages
Sorcery
Choose one --
• Target player draws two cards.
• Target player discards two cards.
{U/B}{U/B}
Dimir Guildmage
Creature - Human Wizard
({U/B} can be paid with either {U} or {B}.)
{3}{U}: Target player draws a card. Activate only as a sorcery.
{3}{B}: Target player discards a card. Activate only as a sorcery.
2 /
2
{4}{U}
Diviner Spirit
Creature - Spirit
Whenever Diviner Spirit deals combat damage to a player, you and that player each draw that many cards.
2 /
4
{U}{U}
Forget
Sorcery
Target player discards two cards, then draws as many cards as they discarded this way.
{4}{B}
Harrowing Journey
Sorcery
Target player draws three cards and loses 3 life.
{3}
Horn of Greed
Artifact
Whenever a player plays a land, that player draws a card.
{1}{U}{U}
Jace Beleren
Legendary Planeswalker - Jace
+2: Each player draws a card.
-1: Target player draws a card.
-10: Target player mills twenty cards.
L:
3
{1}{U}
Jushi Apprentice
Creature - Human Wizard
{2}{U}, {T}: Draw a card. If you have nine or more cards in hand, flip Jushi Apprentice.
1 /
2
--
Tomoya the Revealer
Legendary Creature - Human Wizard
{3}{U}{U}, {T}: Target player draws X cards, where X is the number of cards in your hand.
1 /
2
{4}{U}
Laquatus's Creativity
Sorcery
Target player draws cards equal to the number of cards in their hand, then discards that many cards.
{2}{B}
Painful Lesson
Sorcery
Target player draws two cards and loses 2 life.
{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.
* /
*
{2}{U}
Reckless Scholar
Creature - Human Wizard
{T}: Target player draws a card, then discards a card.
2 /
1
{1}{R}
Shocker
Creature - Insect
Whenever Shocker deals damage to a player, that player discards all the cards in their hand, then draws that many cards.
1 /
1
{2}{B}{ // }{2}{R}
Toil // Trouble
Sorcery // Sorcery
Target player draws two cards and loses 2 life.
Fuse (You may cast one or both halves of this card from your hand.)
Trouble deals damage to target player equal to the number of cards in that player's hand.
Fuse (You may cast one or both halves of this card from your hand.)