Spell Blast

Counter target spell with mana value X. (For example, if that spell's mana cost is {3}{U}{U}, X is 5.)

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.

Psionic Blast

Psionic Blast deals 4 damage to any target and 2 damage to you.

Sol Ring

Crumble

Destroy target artifact. It can't be regenerated. That artifact's controller gains life equal to its mana value.

Plains

Swords to Plowshares

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

Llanowar Elves

Prodigal Sorcerer

{T}: Prodigal Sorcerer deals 1 damage to any target.

Timetwister

Each player shuffles their hand and graveyard into their library, then draws seven cards. (Then put Timetwister into its owner's graveyard.)

Serra Angel

Scavenger Folk

{G}, {T}, Sacrifice Scavenger Folk: Destroy target artifact.

Disenchant

Library of Alexandria

{T}: Add {C}.
{T}: Draw a card. Activate only if you have exactly seven cards in hand.

Ice Storm

Mishra's Factory

{T}: Add {C}.
{1}: Mishra's Factory 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.

Balance

Each player chooses a number of lands they control equal to the number of lands controlled by the player who controls the fewest, then sacrifices the rest. Players discard cards and sacrifice creatures the same way.

Dust to Dust

Mox Pearl

Blue Elemental Blast

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

Braingeyser

Pendelhaven

{T}: Add {G}.
{T}: Target 1/1 creature gets +1/+2 until end of turn.

Black Lotus

{T}, Sacrifice Black Lotus: Add three mana of any one color.

Armageddon

Savannah

Strip Mine

{T}: Add {C}.
{T}, Sacrifice Strip Mine: Destroy target land.

Ancestral Recall

Control Magic

Enchant creature
You control enchanted creature.

Divine Offering

Destroy target artifact. You gain life equal to its mana value.

Meekstone

Creatures with power 3 or greater don't untap during their controllers' untap steps.

Regrowth

Return target card from your graveyard to your hand.

Giant Growth

Target creature gets +3/+3 until end of turn.

Mana Drain

Counter target spell. At the beginning of your next main phase, add an amount of {C} equal to that spell's mana value.

Tropical Island

Mox Sapphire

Time Walk

Ghazbán Ogre

At the beginning of your upkeep, if a player has more life than each other player, the player with the most life gains control of Ghazbán Ogre.

Argothian Pixies

Argothian Pixies can't be blocked by artifact creatures.
Prevent all damage that would be dealt to Argothian Pixies by artifact creatures.

Tundra

Conversion

At the beginning of your upkeep, sacrifice Conversion unless you pay {W}{W}.
All Mountains are Plains.

Savannah Lions

City in a Bottle

Whenever one or more other nontoken permanents with a name originally printed in the Arabian Nights expansion are on the battlefield, their controllers sacrifice them.
Players can't cast spells or play lands with a name originally printed in the Arabian Nights expansion.

Mox Emerald

Energy Flux

All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay {2}."