Defile

Target creature gets -1/-1 until end of turn for each Swamp you control.

Psychosis Crawler

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.

Howling Mine

At the beginning of each player's draw step, if this artifact is untapped, that player draws an additional card.

Typhoid Rats

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

Viseling

At the beginning of each opponent's upkeep, this creature deals X damage to that player, where X is the number of cards in their hand minus 4.

Reassembling Skeleton

{1}{B}: Return this card from your graveyard to the battlefield tapped.

Thrull Parasite

Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.)
{T}, Pay 2 life: Remove a counter from target nonland permanent.

Commander's Sphere

{T}: Add one mana of any color in your commander's color identity.
Sacrifice this artifact: Draw a card.

Mind Stone

{T}: Add {C}.
{1}, {T}, Sacrifice this artifact: Draw a card.

Master of the Feast

Flying
At the beginning of your upkeep, each opponent draws a card.

Sign in Blood

Target player draws two cards and loses 2 life.

Bloodgift Demon

Flying
At the beginning of your upkeep, target player draws a card and loses 1 life.

Ghirapur Orrery

Each player may play an additional land on each of their turns.
At the beginning of each player's upkeep, if that player has no cards in hand, that player draws three cards.

Sangromancer

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

Vampire Hexmage

First strike
Sacrifice this creature: Remove all counters from target permanent.

Sanitarium Skeleton

{2}{B}: Return this card from your graveyard to your hand.

Painful Lesson

Leaden Myr

Megrim

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

Murder

Ob Nixilis, the Hate-Twisted

Whenever an opponent draws a card, Ob Nixilis deals 1 damage to that player.
−2: Destroy target creature. Its controller draws two cards.

Skymarch Bloodletter

Flying
When this creature enters, target opponent loses 1 life and you gain 1 life.

Damnable Pact

Target player draws X cards and loses X life.

Massacre Girl

Menace
When Massacre Girl enters, each other creature gets -1/-1 until end of turn. Whenever a creature dies this turn, each creature other than Massacre Girl gets -1/-1 until end of turn.

Dark Deal

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

Dutiful Return

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

Arcane Signet

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

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.

Harrowing Journey

Target player draws three cards and loses 3 life.

Charcoal Diamond

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

Dread Presence

Whenever a Swamp you control enters, choose one —
• You draw a card and you lose 1 life.
• This creature deals 2 damage to any target and you gain 2 life.

Swamp

Fate Unraveler

Whenever an opponent draws a card, this creature deals 1 damage to that player.

Worn Powerstone

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

Howling Golem

Whenever this creature attacks or blocks, each player draws a card.

Dread Return

Return target creature card from your graveyard to the battlefield.
Flashback—Sacrifice three creatures. (You may cast this card from your graveyard for its flashback cost. Then exile it.)