Star Compass

Star Compass enters tapped.
{T}: Add one mana of any color that a basic land you control could produce.

Skull of Orm

{5}, {T}: Return target enchantment card from your graveyard to your hand.

Dregs of Sorrow

Destroy X target nonblack creatures. Draw X cards.

Jalum Tome

{2}, {T}: Draw a card, then discard a card.

Pestilence

At the beginning of the end step, if no creatures are on the battlefield, sacrifice Pestilence.
{B}: Pestilence deals 1 damage to each creature and each player.

Mortivore

Mortivore's power and toughness are each equal to the number of creature cards in all graveyards.
{B}: Regenerate Mortivore. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Mind Sludge

Target player discards a card for each Swamp you control.

Charcoal Diamond

Charcoal Diamond enters tapped.
{T}: Add {B}.

Shatterstorm

Destroy all artifacts. They can't be regenerated.

Sol Ring

Greed

Jayemdae Tome

Furnace of Rath

If a source would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.

Phyrexian Plaguelord

{T}, Sacrifice Phyrexian Plaguelord: Target creature gets -4/-4 until end of turn.
Sacrifice a creature: Target creature gets -1/-1 until end of turn.

Tainted Aether

Whenever a creature enters, its controller sacrifices a creature or land of their choice.

Power Surge

At the beginning of each player's upkeep, Power Surge deals X damage to that player, where X is the number of untapped lands they controlled at the beginning of this turn.

Fellwar Stone

{T}: Add one mana of any color that a land an opponent controls could produce.

Basalt Monolith

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

Each player loses a third of their life, then discards a third of the cards in their hand, then sacrifices a third of the creatures they control of their choice, then sacrifices a third of the lands they control of their choice. Round up each time.

Diabolic Tutor

Search your library for a card, put that card into your hand, then shuffle.

Jandor's Saddlebags

Oppression

Whenever a player casts a spell, that player discards a card.

Deathgrip

Book of Rass

Plague Wind

Destroy all creatures you don't control. They can't be regenerated.

Howling Mine

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

Manabarbs

Whenever a player taps a land for mana, Manabarbs deals 1 damage to that player.

Hell's Caretaker

{T}, Sacrifice a creature: Return target creature card from your graveyard to the battlefield. Activate only during your upkeep.

Gloom

White spells cost {3} more to cast.
Activated abilities of white enchantments cost {3} more to activate.

Underworld Dreams

Whenever an opponent draws a card, Underworld Dreams deals 1 damage to that player.

Thieves' Auction

Exile all nontoken permanents. Starting with you, each player chooses one of the exiled cards and puts it onto the battlefield tapped under their control. Repeat this process until all cards exiled this way have been chosen.

Phyrexian Arena

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

Blood Moon

Smoke

Players can't untap more than one creature during their untap steps.

Goblin Recruiter

When Goblin Recruiter enters, search your library for any number of Goblin cards, reveal them, then shuffle and put those cards on top in any order.

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.

Zombify

Return target creature card from your graveyard to the battlefield.

Mana Flare

Whenever a player taps a land for mana, that player adds one mana of any type that land produced.

Ur-Golem's Eye

Ambition's Cost

You draw three cards and you lose 3 life.

Goblin War Drums

Creatures you control have menace. (They can't be blocked except by two or more creatures.)

Ashen Powder

Put target creature card from an opponent's graveyard onto the battlefield under your control.

Crystal Vein

{T}: Add {C}.
{T}, Sacrifice Crystal Vein: Add {C}{C}.

Sisters of the Flame

Fatal Blow

Destroy target creature that was dealt damage this turn. It can't be regenerated.

Royal Assassin

Dark Ritual

Reprocess

Sacrifice any number of artifacts, creatures, and/or lands. Draw a card for each permanent sacrificed this way.

Crypt Rats

{X}: Crypt Rats deals X damage to each creature and each player. Spend only black mana on X.

Loxodon Warhammer

Equipped creature gets +3/+0 and has trample and lifelink.
Equip {3}

Death Pits of Rath

Whenever a creature is dealt damage, destroy it. It can't be regenerated.

Bedlam

Sulfurous Springs

{T}: Add {C}.
{T}: Add {B} or {R}. Sulfurous Springs deals 1 damage to you.

Storm Cauldron

Each player may play an additional land during each of their turns.
Whenever a land is tapped for mana, return it to its owner's hand.

Dark Banishing

Destroy target nonblack creature. It can't be regenerated.

Megrim

Whenever an opponent discards a card, Megrim deals 2 damage to that player.

Axelrod Gunnarson

Trample
Whenever a creature dealt damage by Axelrod Gunnarson this turn dies, you gain 1 life and Axelrod deals 1 damage to target player or planeswalker.

Teferi's Puzzle Box

At the beginning of each player's draw step, that player puts the cards in their hand on the bottom of their library in any order, then draws that many cards.

Library of Leng

You have no maximum hand size.
If an effect causes you to discard a card, discard it, but you may put it on top of your library instead of into your graveyard.

Fervor

Creatures you control have haste. (They can attack and {T} as soon as they come under your control.)

Phyrexian Vault

{2}, {T}, Sacrifice a creature: Draw a card.

Final Punishment

Target player loses life equal to the damage already dealt to that player this turn.

Seething Song

Terror

Destroy target nonartifact, nonblack creature. It can't be regenerated.

Pit Scorpion

Whenever Pit Scorpion deals damage to a player, that player gets a poison counter. (A player with ten or more poison counters loses the game.)

Animate Dead

Enchant creature card in a graveyard
When Animate Dead enters, if it's on the battlefield, it loses "enchant creature card in a graveyard" and gains "enchant creature put onto the battlefield with Animate Dead." Return enchanted creature card to the battlefield under your control and attach Animate Dead to it. When Animate Dead leaves the battlefield, that creature's controller sacrifices it.
Enchanted creature gets -1/-0.

Nevinyrral's Disk

Nevinyrral's Disk enters tapped.
{1}, {T}: Destroy all artifacts, creatures, and enchantments.

Sisay's Ring

Slate of Ancestry

{4}, {T}, Discard your hand: Draw a card for each creature you control.

Aladdin

{1}{R}{R}, {T}: Gain control of target artifact for as long as you control Aladdin.

Earthquake

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

Ashnod's Altar

Fire Diamond

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

Relentless Assault

Untap all creatures that attacked this turn. After this main phase, there is an additional combat phase followed by an additional main phase.

Larceny

Whenever a creature you control deals combat damage to a player, that player discards a card.

Planar Portal

{6}, {T}: Search your library for a card, put that card into your hand, then shuffle.

Seismic Assault

Discard a land card: Seismic Assault deals 2 damage to any target.

Goblin Matron

When Goblin Matron enters, you may search your library for a Goblin card, reveal that card, put it into your hand, then shuffle.