Mishra's Factory

{T}: Add {C}.
{1}: This land becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.
{T}: Target Assembly-Worker creature gets +1/+1 until end of turn.

Terminate

Destroy target creature. It can't be regenerated.

Cabal Therapy

Choose a nonland card name. Target player reveals their hand and discards all cards with that name.
Flashback—Sacrifice a creature. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Pyre Zombie

At the beginning of your upkeep, if this card is in your graveyard, you may pay {1}{B}{B}. If you do, return it to your hand.
{1}{R}{R}, Sacrifice this creature: It deals 2 damage to any target.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Dark Ritual

Mountain

Lavaborn Muse

At the beginning of each opponent's upkeep, if that player has two or fewer cards in hand, this creature deals 3 damage to that player.

Sulfurous Springs

{T}: Add {C}.
{T}: Add {B} or {R}. This land deals 1 damage to you.

Swamp

Bloodstained Mire

{T}, Pay 1 life, Sacrifice this land: Search your library for a Swamp or Mountain card, put it onto the battlefield, then shuffle.

Blazing Specter

Flying, haste
Whenever this creature deals combat damage to a player, that player discards a card.

Skeletal Scrying

As an additional cost to cast this spell, exile X cards from your graveyard.
You draw X cards and you lose X life.

Duress

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

Ravenous Rats

When this creature enters, target opponent discards a card.

Hypnotic Specter

Flying
Whenever this creature deals damage to an opponent, that player discards a card at random.