Disenchant

Voltaic Key

City of Traitors

When you play another land, sacrifice City of Traitors.
{T}: Add {C}{C}.

Masticore

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

Red Elemental Blast

Choose one —
• Counter target blue spell.
• Destroy target blue permanent.

Armageddon

Covetous Dragon

Flying
When you control no artifacts, sacrifice Covetous Dragon.

Howling Mine

At the beginning of each player's draw step, if Howling Mine is untapped, that player draws an additional card.

Fire Diamond

Fire Diamond enters tapped.
{T}: Add {R}.

Eternal Dragon

Flying
{3}{W}{W}: Return Eternal Dragon from your graveyard to your hand. Activate only during your upkeep.
Plainscycling {2} ({2}, Discard this card: Search your library for a Plains card, reveal it, put it into your hand, then shuffle.)

Devastating Dreams

As an additional cost to cast this spell, discard X cards at random.
Each player sacrifices X lands of their choice. Devastating Dreams deals X damage to each creature.

Swords to Plowshares

Exile target creature. Its controller gains life equal to its power.

Phyrexian Processor

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

Pyroclasm

Pyroclasm deals 2 damage to each creature.

Viseling

At the beginning of each opponent's upkeep, Viseling deals X damage to that player, where X is the number of cards in their hand minus 4.

Mountain

Marble Diamond

Marble Diamond enters tapped.
{T}: Add {W}.

Battlefield Forge

{T}: Add {C}.
{T}: Add {R} or {W}. Battlefield Forge deals 1 damage to you.

Karn, Silver Golem

Whenever Karn, Silver Golem blocks or becomes blocked, it gets -4/+4 until end of turn.
{1}: Target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value until end of turn.

Wildfire

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

Rack and Ruin

Earthquake

Earthquake deals X damage to each creature without flying and each player.

Thran Dynamo

Wrath of God

Destroy all creatures. They can't be regenerated.

Spellshock

Whenever a player casts a spell, Spellshock deals 2 damage to that player.

Black Vise

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

Ancient Tomb

{T}: Add {C}{C}. Ancient Tomb deals 2 damage to you.

Shattering Pulse

Buyback {3} (You may pay an additional {3} as you cast this spell. If you do, put this card into your hand as it resolves.)
Destroy target 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.)

Plains

Worn Powerstone

Worn Powerstone enters tapped.
{T}: Add {C}{C}.

Mishra's Helix

Grim Monolith

Grim Monolith doesn't untap during your untap step.
{T}: Add {C}{C}{C}.
{4}: Untap Grim Monolith.

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 Tangle Wire.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Cursed Scroll

{3}, {T}: Choose a card name, then reveal a card at random from your hand. If that card has the chosen name, Cursed Scroll deals 2 damage to any target.