Black Vise

As this artifact enters, choose an opponent.
At the beginning of the chosen player's upkeep, this artifact deals X damage to that player, where X is the number of cards in their hand minus 4.

Jackal Pup

Whenever this creature is dealt damage, it deals that much damage to you.

Tangle Wire

Fading 4 (This artifact enters with four fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can't, sacrifice it.)
At the beginning of each player's upkeep, that player taps an untapped artifact, creature, or land they control for each fade counter on this artifact.

Sulfuric Vortex

At the beginning of each player's upkeep, this enchantment deals 2 damage to that player.
If a player would gain life, that player gains no life instead.

Mountain

Incinerate

Incinerate deals 3 damage to any target. A creature dealt damage this way can't be regenerated this turn.

Ball Lightning

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
Haste (This creature can attack and {T} as soon as it comes under your control.)
At the beginning of the end step, sacrifice this creature.

Fire Diamond

This artifact enters tapped.
{T}: Add {R}.

The Rack

As this artifact enters, choose an opponent.
At the beginning of the chosen player's upkeep, this artifact deals X damage to that player, where X is 3 minus the number of cards in their hand.

Fireball

This spell costs {1} more to cast for each target beyond the first.
Fireball deals X damage divided evenly, rounded down, among any number of targets.

Phyrexian Processor

As this artifact enters, pay any amount of life.
{4}, {T}: Create an X/X black Phyrexian Minion creature token, where X is the life paid as this artifact entered.

Grim Monolith

This artifact doesn't untap during your untap step.
{T}: Add {C}{C}{C}.
{4}: Untap this artifact.

Temporal Aperture

{5}, {T}: Shuffle your library, then reveal the top card. Until end of turn, for as long as that card remains on top of your library, play with the top card of your library revealed and you may play that card without paying its mana cost. (If it has X in its mana cost, X is 0.)

Crystal Vein

{T}: Add {C}.
{T}, Sacrifice this land: Add {C}{C}.

Phyrexian Colossus

This creature doesn't untap during your untap step.
Pay 8 life: Untap this creature.
This creature can't be blocked except by three or more creatures.

Thran Dynamo

Masticore

At the beginning of your upkeep, sacrifice this creature unless you discard a card.
{2}: This creature deals 1 damage to target creature.
{2}: Regenerate this creature.

Voltaic Key

Goblin Welder

{T}: Choose target artifact a player controls and target artifact card in that player's graveyard. If both targets are still legal as this ability resolves, that player simultaneously sacrifices the artifact and returns the artifact card to the battlefield.

Ticking Gnomes

Echo {3} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
Sacrifice this creature: It deals 1 damage to any target.

Rishadan Port

Undiscovered Paradise

{T}: Add one mana of any color. During your next untap step, as you untap your permanents, return this land to its owner's hand.

City of Traitors

When you play another land, sacrifice this land.
{T}: Add {C}{C}.

Covetous Dragon

Flying
When you control no artifacts, sacrifice this creature.

Chaos Charm

Choose one —
• Destroy target Wall.
• Chaos Charm deals 1 damage to target creature.
• Target creature gains haste until end of turn.

Worn Powerstone

This artifact enters tapped.
{T}: Add {C}{C}.

Reflecting Pool

{T}: Add one mana of any type that a land you control could produce.

Wildfire

Each player sacrifices four lands of their choice. Wildfire deals 4 damage to each creature.

Mogg Fanatic

Sacrifice this creature: It deals 1 damage to any target.

Hearth Charm

Choose one —
• Destroy target artifact creature.
• Attacking creatures get +1/+0 until end of turn.
• Target creature with power 2 or less can't be blocked this turn.