Hopeless Nightmare

When this enchantment enters, each opponent discards a card and loses 2 life.
When this enchantment is put into a graveyard from the battlefield, scry 2.
{2}{B}: Sacrifice this enchantment.

Deal Gone Bad

Target creature gets -3/-3 until end of turn. Target player mills three cards. (They put the top three cards of their library into their graveyard.)

Withercrown

Enchant creature
Enchanted creature has base power 0 and has "At the beginning of your upkeep, you lose 1 life unless you sacrifice this creature."

Defenestrate

Etched Familiar

When this creature dies, each opponent loses 2 life and you gain 2 life.

Nefarious Imp

Flying
Whenever one or more permanents you control leave the battlefield, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Death's Approach

Enchant creature
Enchanted creature gets -X/-X, where X is the number of creature cards in its controller's graveyard.

Burglar Rat

When this creature enters, each opponent discards a card.

Fleshbag Marauder

When this creature enters, each player sacrifices a creature of their choice.

Dutiful Attendant

When this creature dies, return another target creature card from your graveyard to your hand.

Lurking Deadeye

Flash
When this creature enters, destroy target creature that was dealt damage this turn.

Nimana Skydancer

Flash
Flying
When this creature enters, target opponent mills two cards. (They put the top two cards of their library into their graveyard.)

Diabolic Edict

Target player sacrifices a creature of their choice.

Vicious Rumors

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

Nocturnal Hunger

Gift a Food (You may promise an opponent a gift as you cast this spell. If you do, they create a Food token before its other effects. It's an artifact with "{2}, {T}, Sacrifice this token: You gain 3 life.")
Destroy target creature. If the gift wasn't promised, you lose 2 life.

Urborg Uprising

Return up to two target creature cards from your graveyard to your hand.
Draw a card.

Crashing Drawbridge

Defender
{T}: Creatures you control gain haste until end of turn.

Songs of the Damned

Add {B} for each creature card in your graveyard.

Hunter's Blowgun

Equipped creature gets +1/+1.
Equipped creature has deathtouch during your turn. Otherwise, it has reach.
Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

Slice from the Shadows

This spell can't be countered. (This includes by the ward ability.)
Target creature gets -X/-X until end of turn.

Undercity Scrounger

{T}: Create a Treasure token. Activate only if a creature died this turn. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Spread the Sickness

Destroy target creature, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Vicious Battlerager

When this creature enters, you take the initiative.
Spiked Retribution — Whenever this creature becomes blocked by a creature, that creature's controller loses 5 life.

Gravepurge

Put any number of target creature cards from your graveyard on top of your library.
Draw a card.

Swamp

Koma's Faithful

Lifelink (Damage dealt by this creature also causes you to gain that much life.)
When this creature dies, each player mills three cards. (They each put the top three cards of their library into their graveyard.)

Ravenous Rats

When this creature enters, target opponent discards a card.

Demon's Disciple

When this creature enters, each player sacrifices a creature or planeswalker of their choice.

Refurbished Familiar

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
Flying
When this creature enters, each opponent discards a card. For each opponent who can't, you draw a card.

Atrocious Experiment

Target player mills two cards, draws two cards, and loses 2 life. (To mill a card, a player puts the top card of their library into their graveyard.)

Bonebind Orator

{3}{B}, Exile this card from your graveyard: Return another target creature card from your graveyard to your hand.

Deadly Derision

Destroy target creature or planeswalker. Create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Parasitic Impetus

Enchant creature
Enchanted creature gets +2/+2 and is goaded. (It attacks each combat if able and attacks a player other than you if able.)
Whenever enchanted creature attacks, its controller loses 2 life and you gain 2 life.

Incriminate

Choose two target creatures controlled by the same player. That player sacrifices one of them of their choice.

Grisly Spectacle

Destroy target nonartifact creature. Its controller mills cards equal to that creature's power.

Deathcap Marionette

Deathtouch
When this creature enters, you may mill two cards. (You may put the top two cards of your library into your graveyard.)

Myrkul's Edict

Roll a d20.
1—9 | Choose an opponent. That player sacrifices a creature of their choice.
10—19 | Each opponent sacrifices a creature of their choice.
20 | Each opponent sacrifices a creature with the greatest power among creatures that player controls.

Dark Banishing

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

Yuan-Ti Fang-Blade

Deathtouch
Whenever this creature deals combat damage to a player, venture into the dungeon. (Enter the first room or advance to the next room.)

Tenured Oilcaster

Menace (This creature can't be blocked except by two or more creatures.)
This creature gets +3/+0 as long as an opponent has eight or more cards in their graveyard.
Whenever this creature attacks or blocks, each player mills a card.

Nezumi Informant

Join the Dead

Target creature gets -5/-5 until end of turn.
Descend 4 — That creature gets -10/-10 until end of turn instead if there are four or more permanent cards in your graveyard.

Gnat Miser

Each opponent's maximum hand size is reduced by one.

Chain Devil

Animate Chains — When this creature enters, each player sacrifices a nontoken creature of their choice.

Summon Undead

You may mill three cards. Then return a creature card from your graveyard to the battlefield. (To mill a card, put the top card of your library into your graveyard.)

Miasmic Mummy

When this creature enters, each player discards a card.

Savor

Target creature gets -2/-2 until end of turn. Create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this token: You gain 3 life.")

The Dross Pits

This land enters tapped.
{T}: Add {B}.
{1}{B}, {T}, Sacrifice this land: Draw a card.

Guildsworn Prowler

Deathtouch
When this creature dies, if it wasn't blocking, draw a card.

Charcoal Diamond

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

Dhund Operative

As long as you control an artifact, this creature gets +1/+0 and has deathtouch.

Severed Strands

As an additional cost to cast this spell, sacrifice a creature.
You gain life equal to the sacrificed creature's toughness. Destroy target creature an opponent controls.

Decanter of Endless Water

You have no maximum hand size.
{T}: Add one mana of any color.

Virus Beetle

Arms of Hadar

Creatures target player controls get -2/-2 until end of turn.

Innocent Blood

Each player sacrifices a creature of their choice.

Murder

Syr Konrad, the Grim

Whenever another creature dies, or a creature card is put into a graveyard from anywhere other than the battlefield, or a creature card leaves your graveyard, Syr Konrad deals 1 damage to each opponent.
{1}{B}: Each player mills a card. (They each put the top card of their library into their graveyard.)

Ghastly Demise

Destroy target nonblack creature if its toughness is less than or equal to the number of cards in your graveyard.

Daggerfang Duo

Mirrodin Avenged

Destroy target creature that was dealt damage this turn.
Draw a card.

Another Chance

You may mill two cards. Then return up to two creature cards from your graveyard to your hand. (To mill two cards, put the top two cards of your library into your graveyard.)

Breathe Your Last

Destroy target creature or planeswalker. You gain 1 life for each of its colors.

Vraska's Fall

Each opponent sacrifices a creature or planeswalker of their choice and gets a poison counter.

Entropic Decay

Mill four cards. (Then exile this card. You may cast the creature later from exile.)

Gray Slaad

As long as there are four or more creature cards in your graveyard, this creature has menace and deathtouch.

Gray Slaad // Entropic Decay

Glidedive Duo

Flying
When this creature enters, each opponent loses 2 life and you gain 2 life.

Thought Vessel

You have no maximum hand size.
{T}: Add {C}.

Pulse Tracker

Whenever this creature attacks, each opponent loses 1 life.

Skull Raid

Target opponent discards two cards. If fewer than two cards were discarded this way, you draw cards equal to the difference.
Foretell {1}{B} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Accursed Marauder

When this creature enters, each player sacrifices a nontoken creature of their choice.

Typhoid Rats

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)