Giant Scorpion

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

Spark Harvest

As an additional cost to cast this spell, sacrifice a creature or pay {3}{B}.
Destroy target creature or planeswalker.

Liliana's Specter

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

Davriel's Shadowfugue

Target player discards two cards and loses 2 life.

Toll of the Invasion

Target opponent reveals their hand. You choose a nonland card from it. That player discards that card.
Amass Zombies 1. (Put a +1/+1 counter on an Army you control. It's also a Zombie. If you don't control an Army, create a 0/0 black Zombie Army creature token first.)

Grasping Scoundrel

Grasping Scoundrel gets +1/+0 as long as it's attacking.

Ravenous Rats

When Ravenous Rats enters, target opponent discards a card.

Noxious Groodion

Nimana Skitter-Sneak

As long as an opponent has eight or more cards in their graveyard, Nimana Skitter-Sneak gets +1/+0 and has menace. (It can't be blocked except by two or more creatures.)

Sanitarium Skeleton

{2}{B}: Return Sanitarium Skeleton from your graveyard to your hand.

Dead Revels

Spectacle {1}{B} (You may cast this spell for its spectacle cost rather than its mana cost if an opponent lost life this turn.)
Return up to two target creature cards from your graveyard to your hand.

Vicious Rumors

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

Veiled Shade

{1}{B}: Veiled Shade gets +1/+1 until end of turn.

Asphodel Wanderer

Thirsting Shade

Lifelink
{2}{B}: Thirsting Shade gets +1/+1 until end of turn.

Ob Nixilis's Cruelty

Target creature gets -5/-5 until end of turn. If that creature would die this turn, exile it instead.

Murder

Audacious Thief

Whenever Audacious Thief attacks, you draw a card and you lose 1 life.

Swamp

Burglar Rat

When this creature enters, each opponent discards a card.

Hired Poisoner

Mind Rot

Briarblade Adept

Whenever Briarblade Adept attacks, target creature an opponent controls gets -1/-1 until end of turn.
Encore {3}{B} ({3}{B}, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)

Elvish Doomsayer

When Elvish Doomsayer dies, each opponent discards a card.

Banehound

Duress

Target opponent reveals their hand. You choose a noncreature, nonland card from it. That player discards that card.