Phyrexian Arena

At the beginning of your upkeep, you draw a card and you lose 1 life.

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.

Carnophage

At the beginning of your upkeep, tap this creature unless you pay 1 life.

Dark Ritual

Phyrexian Negator

Trample
Whenever this creature is dealt damage, sacrifice that many permanents.

Duress

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

Bad Moon

Perish

Destroy all green creatures. They can't be regenerated.

Spinning Darkness

You may exile the top three black cards of your graveyard rather than pay this spell's mana cost.
Spinning Darkness deals 3 damage to target nonblack creature. You gain 3 life.

Swamp

Dystopia

Cumulative upkeep—Pay 1 life. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
At the beginning of each player's upkeep, that player sacrifices a green or white permanent of their choice.

Planar Void

Whenever another card is put into a graveyard from anywhere, exile that card.

Engineered Plague

As this enchantment enters, choose a creature type.
All creatures of the chosen type get -1/-1.

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.

Withered Wretch

Snuff Out

If you control a Swamp, you may pay 4 life rather than pay this spell's mana cost.
Destroy target nonblack creature. It can't be regenerated.

Dauthi Horror

Shadow (This creature can block or be blocked by only creatures with shadow.)
This creature can't be blocked by white creatures.

Skittering Skirge

Flying
When you cast a creature spell, sacrifice this creature.

Sarcomancy

When this enchantment enters, create a 2/2 black Zombie creature token.
At the beginning of your upkeep, if there are no Zombies on the battlefield, this enchantment deals 1 damage to you.

Hypnotic Specter

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

Smother

Destroy target creature with mana value 3 or less. It can't be regenerated.

Dauthi Slayer

Shadow (This creature can block or be blocked by only creatures with shadow.)
This creature attacks each combat if able.