Necrogen Mists

At the beginning of each player's upkeep, that player discards a card.

Blinding Beam

Choose one —
• Tap two target creatures.
• Creatures don't untap during target player's next untap step.
Entwine {1} (Choose both if you pay the entwine cost.)

Nim Devourer

This creature gets +1/+0 for each artifact you control.
{B}{B}: Return this card from your graveyard to the battlefield, then sacrifice a creature. Activate only during your upkeep.

Nim Lasher

This creature gets +1/+0 for each artifact you control.

Nim Shambler

This creature gets +1/+0 for each artifact you control.
Sacrifice a creature: Regenerate this creature.

Nim Shrieker

Flying
This creature gets +1/+0 for each artifact you control.

Demon

Promise of Power

Choose one —
• You draw five cards and you lose 5 life.
• Create an X/X black Demon creature token with flying, where X is the number of cards in your hand.
Entwine {4} (Choose both if you pay the entwine cost.)

Reiver Demon

Flying
When this creature enters, if you cast it from your hand, destroy all nonartifact, nonblack creatures. They can't be regenerated.

Relic Bane

Enchant artifact
Enchanted artifact has "At the beginning of your upkeep, you lose 2 life."

Slith Bloodletter

Whenever this creature deals combat damage to a player, put a +1/+1 counter on it.
{1}{B}: Regenerate this creature.

Spoils of the Vault

Choose a card name. Reveal cards from the top of your library until you reveal a card with that name, then put that card into your hand. Exile all other cards revealed this way, and you lose 1 life for each of the exiled cards.

Terror

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

Leonin Abunas

Artifacts you control have hexproof. (They can't be the targets of spells or abilities your opponents control.)

Vermiculos

Whenever an artifact enters, this creature gets +4/+4 until end of turn.

Wail of the Nim

Choose one —
• Regenerate each creature you control.
• Wail of the Nim deals 1 damage to each creature and each player.
Entwine {B} (Choose both if you pay the entwine cost.)

Wall of Blood

Defender (This creature can't attack.)
Pay 1 life: This creature gets +1/+1 until end of turn.

Mirrodin