Cadaver Imp

Flying
When this creature enters, you may return target creature card from your graveyard to your hand.

Hulking Devil

Chain Devil

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

Lord of the Void

Flying
Whenever this creature deals combat damage to a player, exile the top seven cards of that player's library, then put a creature card from among them onto the battlefield under your control.

Impetuous Devils

Trample, haste
When this creature attacks, up to one target creature defending player controls blocks it this combat if able.
At the beginning of the end step, sacrifice this creature.

Abyssal Persecutor

Flying, trample
You can't win the game and your opponents can't lose the game.

Vexing Devil

When this creature enters, any opponent may have it deal 4 damage to them. If a player does, sacrifice this creature.

Rune-Scarred Demon

Flying
When this creature enters, search your library for a card, put it into your hand, then shuffle.

Carrion Imp

Flying
When this creature enters, you may exile target creature card from a graveyard. If you do, you gain 2 life.

Havoc Devils

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

Soul Swindler

As long as you've visited an Attraction this turn, this creature has indestructible. (Damage and effects that say "destroy" don't destroy it.)
When this creature enters, open an Attraction. (Put the top card of your Attraction deck onto the battlefield.)

Fetid Imp

Flying
{B}: This creature gains deathtouch until end of turn. (Any amount of damage it deals to a creature is enough to destroy it.)

Showstopper

Until end of turn, creatures you control gain "When this creature dies, it deals 2 damage to target creature an opponent controls."

Dance with Devils

Create two 1/1 red Devil creature tokens. They have "When this token dies, it deals 1 damage to any target."

Rakdos, the Showstopper

Flying, trample
When Rakdos enters, flip a coin for each creature that isn't a Demon, Devil, or Imp. Destroy each creature whose coin comes up tails.

Bog Imp

Flying (This creature can't be blocked except by creatures with flying or reach.)

Master of Cruelties

First strike, deathtouch
This creature can only attack alone.
Whenever this creature attacks a player and isn't blocked, that player's life total becomes 1. This creature assigns no combat damage this combat.