Whenever an opponent discards a card, Abyssal Nocturnus gets +2/+2 and gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)

Exile all permanents. You discard your hand.

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.)

Each opponent discards two cards. If you control a Vampire, each opponent loses 2 life and you gain 2 life.

Discard your hand. Search your library for three cards, put them into your hand, then shuffle.

Blackcleave Cliffs enters the battlefield tapped unless you control two or fewer other lands.

{T}: Add {B} or {R}.

{R}: Blazing Rootwalla gets +2/+0 until end of turn. Activate only once each turn.

Madness {0} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Blightning deals 3 damage to target player or planeswalker. That player or that planeswalker's controller discards two cards.

Bloodfell Caves enters the battlefield tapped.

When Bloodfell Caves enters the battlefield, you gain 1 life.

{T}: Add {B} or {R}.

Whenever Bloodhall Priest enters the battlefield or attacks, if you have no cards in hand, Bloodhall Priest deals 2 damage to any target.

Madness {1}{B}{R} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

{T}, Pay 1 life, Sacrifice Bloodstained Mire: Search your library for a Swamp or Mountain card, put it onto the battlefield, then shuffle.

When Burglar Rat enters the battlefield, each opponent discards a card.

{T}: Add one mana of any color in your commander's color identity.

{T}: Add one mana of any color in your commander's color identity.

Sacrifice Commander's Sphere: Draw a card.

Flying

Whenever an opponent draws a card, you may draw two cards.

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.

Flying

Whenever Crosis, the Purger deals combat damage to a player, you may pay {2}{B}. If you do, choose a color, then that player reveals their hand and discards all cards of that color.

Crumbling Necropolis enters the battlefield tapped.

{T}: Add {U}, {B}, or {R}.

Whenever you cycle or discard a card, Cunning Survivor gets +1/+0 until end of turn and can't be blocked this turn.

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.")

Each player discards all the cards in their hand, then draws that many cards minus one.

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}.

At the beginning of each opponent's upkeep, if that player has one or fewer cards in hand, Davriel, Rogue Shadowmage deals 2 damage to them.

-1: Target player discards a card.

Choose up to four target cards in your graveyard. If you control a Bolas planeswalker, return those cards to your hand. Otherwise, an opponent chooses two of them. Leave the chosen cards in your graveyard and put the rest into your hand.

Exile Deliver Unto Evil.

Search your library for a card, put that card into your hand, then shuffle.

Desert of the Glorified enters the battlefield tapped.

{T}: Add {B}.

Cycling {1}{B} ({1}{B}, Discard this card: Draw a card.)

Desert of the Mindful enters the battlefield tapped.

{T}: Add {U}.

Cycling {1}{U} ({1}{U}, Discard this card: Draw a card.)

Search your library for a card, put that card into your hand, then shuffle.

Dimir Aqueduct enters the battlefield tapped.

When Dimir Aqueduct enters the battlefield, return a land you control to its owner's hand.

{T}: Add {U}{B}.

Dismal Backwater enters the battlefield tapped.

When Dismal Backwater enters the battlefield, you gain 1 life.

{T}: Add {U} or {B}.

Dragonskull Summit enters the battlefield tapped unless you control a Swamp or a Mountain.

{T}: Add {B} or {R}.

Drowned Catacomb enters the battlefield tapped unless you control an Island or a Swamp.

{T}: Add {U} or {B}.

{2}, {T}: You gain 5 life. Shuffle Elixir of Immortality and your graveyard into their owner's library.

{T}, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

As Frostboil Snarl enters the battlefield, you may reveal an Island or Mountain card from your hand. If you don't, Frostboil Snarl enters the battlefield tapped.

{T}: Add {U} or {R}.

{T}: Add {C}.

{2}, {T}: Each player draws a card, then discards a card.

Whenever an opponent discards a card, you may draw a card.

At the beginning of each player's upkeep, that player loses 1 life and discards a card.

Hellbent -- Skip your upkeep step if you have no cards in hand.

Madness {2}{B}{B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Whenever Gorgon Recluse blocks or becomes blocked by a nonblack creature, destroy that creature at end of combat.

Madness {B}{B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Madness {1}{B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

When Grave Scrabbler enters the battlefield, if its madness cost was paid, you may return target creature card from a graveyard to its owner's hand.

{T}: Add {C}.

{B/R}, {T}: Add {B}{B}, {B}{R}, or {R}{R}.

Flying

Guul Draz Specter gets +3/+3 as long as an opponent has no cards in hand.

Whenever Guul Draz Specter deals combat damage to a player, that player discards a card.

Flash

If an opponent would draw a card except the first one they draw in each of their draw steps, instead you create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Target player discards two cards at random.

Target creature gets -3/-3 until end of turn.

Cycling {2} ({2}, Discard this card: Draw a card.)

Madness {3}{B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Exile Ill-Gotten Gains. Each player discards their hand, then returns up to three cards from their graveyard to their hand.

Immersturm Skullcairn enters the battlefield tapped.

{T}: Add {B}.

{1}{B}{R}{R}, {T}, Sacrifice Immersturm Skullcairn: It deals 3 damage to target player. That player discards a card. Activate only as a sorcery.

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

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}.

Choose two --

• Return target creature card from your graveyard to your hand.

• Target player discards a card.

• Destroy target artifact.

• Kolaghan's Command deals 2 damage to any target.

If you would draw a card while your library has no cards in it, you win the game instead.

Whenever an opponent discards a card, that player loses 2 life.

Flying

When Liliana's Specter enters the battlefield, each opponent discards a card.

{T}: Add one mana of any color.

Whenever an opponent discards a card, Megrim deals 2 damage to that player.

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

At the beginning of your upkeep, scry 1.

Whenever you discard a card, each opponent mills two cards. (They put the top two cards of their library into their graveyard.)

Return target instant or sorcery card from your graveyard to your hand.

Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Each opponent can't draw more than one card each turn.

-2: Look at the top four cards of your library. You may reveal a noncreature, nonland card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Necrogoyf's power is equal to the number of creature cards in all graveyards.

At the beginning of each player's upkeep, that player discards a card.

Madness {1}{B}{B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

+3: Destroy target noncreature permanent.

-2: Gain control of target creature.

-9: Nicol Bolas, Planeswalker deals 7 damage to target player or planeswalker. That player or that planeswalker's controller discards seven cards, then sacrifices seven permanents.

Flying

When Nicol Bolas, the Ravager enters the battlefield, each opponent discards a card.

{4}{U}{B}{R}: Exile Nicol Bolas, the Ravager, then return him to the battlefield transformed under his owner's control. Activate only as a sorcery.

+2: Draw two cards.

-3: Nicol Bolas, the Arisen deals 10 damage to target creature or planeswalker.

-4: Put target creature or planeswalker card from a graveyard onto the battlefield under your control.

-12: Exile all but the bottom card of target player's library.

Whenever an opponent draws a card, Ob Nixilis, the Hate-Twisted deals 1 damage to that player.

-2: Destroy target creature. Its controller draws two cards.

Whenever an opponent casts a spell, that player loses 5 life unless they discard a card.

Whenever a player draws a card, that player loses 2 life unless they pay {2}.

When Plaguecrafter enters the battlefield, each player sacrifices a creature or planeswalker. Each player who can't discards a card.

When Possessed Skaab enters the battlefield, return target instant, sorcery, or creature card from your graveyard to your hand.

If Possessed Skaab would die, exile it instead.

Target player reveals three cards from their hand and you choose one of them. That player discards that card. Then if that player has more cards in hand than you, return Pulse of the Dross to its owner's hand.

Rakdos Carnarium enters the battlefield tapped.

When Rakdos Carnarium enters the battlefield, return a land you control to its owner's hand.

{T}: Add {B}{R}.

Search your library for a card, put that card into your hand, then shuffle.

Cycling {B} ({B}, Discard this card: Draw a card.)

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.)

You have no maximum hand size.

{T}: Add {C}.

Flying

Whenever a creature an opponent controls dies, you may gain 3 life.

Whenever an opponent discards a card, you may gain 3 life.

Choose two --

• Counter target noncreature spell.

• Return target permanent to its owner's hand.

• Target creature gets -3/-3 until end of turn.

• Destroy target planeswalker.

At the beginning of each end step, each player discards their hand.

({T}: Add {B} or {R}.)

Smoldering Marsh enters the battlefield tapped unless you control two or more basic lands.

{T}: Add {C}{C}.

({T}: Add {U} or {B}.)

Sunken Hollow enters the battlefield tapped unless you control two or more basic lands.

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

Swiftwater Cliffs enters the battlefield tapped.

When Swiftwater Cliffs enters the battlefield, you gain 1 life.

{T}: Add {U} or {R}.

Destroy target creature. It can't be regenerated.

{T}, Sacrifice Terramorphic Expanse: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I -- Each opponent sacrifices a creature or planeswalker.

II -- Each opponent discards a card.

III -- Put target creature or planeswalker card from a graveyard onto the battlefield under your control.

Flying, lifelink

Whenever The Haunt of Hightower attacks, defending player discards a card.

Whenever a card is put into an opponent's graveyard from anywhere, put a +1/+1 counter on The Haunt of Hightower.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I -- Return target instant card from your graveyard to your hand.

II -- Return target sorcery card from your graveyard to your hand.

III -- Until end of turn, whenever you cast an instant or sorcery spell, copy it. You may choose new targets for the copy.

{T}: Add {C}{C}{C}.

Return up to one target creature card from your graveyard to the battlefield if {B} was spent to cast this spell. Creatures target player controls get +2/+0 and gain haste until end of turn if {R} was spent to cast this spell. (Do both if {B}{R} was spent.)

{T}: Add {C}.

{T}: Add {U} or {B}. Underground River deals 1 damage to you.

Each player draws two cards, then discards three cards, then loses 4 life.

When Valki enters the battlefield, each opponent reveals their hand. For each opponent, exile a creature card they revealed this way until Valki leaves the battlefield.

{X}: Choose a creature card exiled with Valki with mana value X. Valki becomes a copy of that card.

As Tibalt enters the battlefield, you get an emblem with "You may play cards exiled with Tibalt, Cosmic Impostor, and you may spend mana as though it were mana of any color to cast those spells."

+2: Exile the top card of each player's library.

-3: Exile target artifact or creature.

-8: Exile all graveyards. Add {R}{R}{R}.

Vicious Rumors deals 1 damage to each opponent. Each opponent discards a card, then mills a card. You gain 1 life.

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.

({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.

Any number of target opponents each discard their hands, then draw seven cards.

Draw a card.

Suspend 4--{1}{R} (Rather than cast this card from your hand, pay {1}{R} and exile it with four time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)

Each player discards their hand, then draws seven cards.

Each player secretly chooses a number 0 or greater, then all players reveal those numbers simultaneously and determine the highest and lowest numbers revealed this way. Wheel of Misfortune deals damage equal to the highest number to each player who chose that number. Each player who didn't choose the lowest number discards their hand, then draws seven cards.