Virus Beetle

When Virus Beetle enters, each opponent discards a card.

Arcane Signet

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

Quick Study

Scry 1. (Look at the top card of your library. You may put that card on the bottom.)
Draw a card.

Sky Diamond

Siren of the Silent Song

Flying
Inspired — Whenever Siren of the Silent Song becomes untapped, each opponent discards a card, then each opponent mills a card.

Hopeless Nightmare

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

Elderfang Disciple

When Elderfang Disciple enters, each opponent discards a card.

Talion, the Kindly Lord

Flying
As Talion, the Kindly Lord enters, choose a number between 1 and 10.
Whenever an opponent casts a spell with mana value, power, or toughness equal to the chosen number, that player loses 2 life and you draw a card.

Arterial Flow

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

Acquisitions Expert

When Acquisitions Expert enters, target opponent reveals a number of cards from their hand equal to the number of creatures in your party. You choose one of those cards. That player discards that card. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.)

Sol Ring

Divest

Target player reveals their hand. You choose an artifact or creature card from it. That player discards that card.

Waste Not

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.

Talisman of Dominance

{T}: Add {C}.
{T}: Add {U} or {B}. Talisman of Dominance deals 1 damage to you.

Blackmail

Target player reveals three cards from their hand and you choose one of them. That player discards that card.

Dimir Signet

Nezumi Informant

When Nezumi Informant enters, each opponent discards a card.

Burglar Rat

When this creature enters, each opponent discards a card.

Distress

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

Duress

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