Hypnotic Specter

Flying
Whenever this creature deals damage to an opponent, that player discards a card at random.

Abyssal Nocturnus

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

Cabal Conditioning

Any number of target players each discard a number of cards equal to the greatest mana value among permanents you control.

Syphon Mind

Each other player discards a card. You draw a card for each card discarded this way.

Go for the Throat

Sengir Vampire

Flying (This creature can't be blocked except by creatures with flying or reach.)
Whenever a creature dealt damage by this creature this turn dies, put a +1/+1 counter on this creature.

Barren Moor

This land enters tapped.
{T}: Add {B}.
Cycling {B} ({B}, Discard this card: Draw a card.)

Swamp

Corrupt Court Official

When this creature enters, target opponent discards a card.

Mindstab Thrull

Whenever this creature attacks and isn't blocked, you may sacrifice it. If you do, defending player discards three cards.

Alley Grifters

Whenever this creature becomes blocked, defending player discards a card.

Dark Ritual

Doom Blade

Liliana's Caress

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

Virus Beetle

When this creature enters, each opponent discards a card.

Dusk Mangler

As an additional cost to cast this spell, sacrifice a creature, discard a card, or pay 4 life.
When this creature enters, each opponent sacrifices a creature of their choice, discards a card, and loses 4 life.

Cabal Interrogator

{X}{B}, {T}: Target player reveals X cards from their hand and you choose one of them. That player discards that card. Activate only as a sorcery.

Roadside Reliquary

{T}: Add {C}.
{2}, {T}, Sacrifice this land: Draw a card if you control an artifact. Draw a card if you control an enchantment.

Dregs of Sorrow

Destroy X target nonblack creatures. Draw X cards.

Ebon Stronghold

This land enters tapped.
{T}: Add {B}.
{T}, Sacrifice this land: Add {B}{B}.

Mind Sludge

Target player discards a card for each Swamp you control.

Words of Waste

{1}: The next time you would draw a card this turn, each opponent discards a card instead.

Charcoal Diamond

This artifact enters tapped.
{T}: Add {B}.

Cut Down

Destroy target creature with total power and toughness 5 or less.

Nightmare

Flying (This creature can't be blocked except by creatures with flying or reach.)
Nightmare's power and toughness are each equal to the number of Swamps you control.

Temple of the False God

{T}: Add {C}{C}. Activate only if you control five or more lands.

Earsplitting Rats

When this creature enters, each player discards a card.
Discard a card: Regenerate this creature.

The Rack

As this artifact enters, choose an opponent.
At the beginning of the chosen player's upkeep, this artifact deals X damage to that player, where X is 3 minus the number of cards in their hand.

Fell Specter

Flying
When this creature enters, target opponent discards a card.
Whenever an opponent discards a card, that player loses 2 life.

Terror

Destroy target nonartifact, nonblack creature. It can't be regenerated.

Abyssal Specter

Flying
Whenever this creature deals damage to a player, that player discards a card.

Headhunter

Whenever this creature deals combat damage to a player, that player discards a card.
Morph {B} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Unearth

Return target creature card with mana value 3 or less from your graveyard to the battlefield.
Cycling {2} ({2}, Discard this card: Draw a card.)

Mind Twist

Target player discards X cards at random.

Raiders' Wake

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.