Blood Lust

If target creature has toughness 5 or greater, it gets +4/-4 until end of turn. Otherwise, it gets +4/-X until end of turn, where X is its toughness minus 1.

Singing Tree

{T}: Target attacking creature has base power 0 until end of turn.

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.

Demonic Tutor

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

Bayou

Triassic Egg

{3}, {T}: Put a hatchling counter on Triassic Egg.
Sacrifice Triassic Egg: Choose one. Activate only if there are two or more hatchling counters on Triassic Egg.
• You may put a creature card from your hand onto the battlefield.
• Return target creature card from your graveyard to the battlefield.

Dark Ritual

Hell's Caretaker

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

Desert

{T}: Add {C}.
{T}: Desert deals 1 damage to target attacking creature. Activate only during the end of combat step.

Killer Bees

Flying
{G}: Killer Bees gets +1/+1 until end of turn.

Untamed Wilds

Search your library for a basic land card, put that card onto the battlefield, then shuffle.

Raise Dead

Return target creature card from your graveyard to your hand.

Nevinyrral's Disk

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

Lord of the Pit

Flying, trample
At the beginning of your upkeep, sacrifice a creature other than Lord of the Pit. If you can't, Lord of the Pit deals 7 damage to you.

Paralyze

Enchant creature
When Paralyze enters, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.
At the beginning of the upkeep of enchanted creature's controller, that player may pay {4}. If the player does, untap the creature.

Pendelhaven

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

Headless Horseman

Mana Vault

Mana Vault doesn't untap during your untap step.
At the beginning of your upkeep, you may pay {4}. If you do, untap Mana Vault.
At the beginning of your draw step, if Mana Vault is tapped, it deals 1 damage to you.
{T}: Add {C}{C}{C}.

Wall of Shadows

Defender (This creature can't attack.)
Prevent all damage that would be dealt to Wall of Shadows by creatures it's blocking.
Wall of Shadows can't be the target of spells that can target only Walls or of abilities that can target only Walls.

Triskelion

Triskelion enters with three +1/+1 counters on it.
Remove a +1/+1 counter from Triskelion: It deals 1 damage to any target.

Hypnotic Specter

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

Disintegrate

Disintegrate deals X damage to any target. If it's a creature, it can't be regenerated this turn, and if it would die this turn, exile it instead.

Wild Growth

Enchant land
Whenever enchanted land is tapped for mana, its controller adds an additional {G}.

Fallen Angel

Flying
Sacrifice a creature: Fallen Angel gets +2/+1 until end of turn.

Reincarnation

Choose target creature. When that creature dies this turn, return a creature card from its owner's graveyard to the battlefield under the control of that creature's owner.

Giant Strength

Enchant creature
Enchanted creature gets +2/+2.

Taiga

Cockatrice

Flying
Whenever Cockatrice blocks or becomes blocked by a non-Wall creature, destroy that creature at end of combat.

Tawnos's Coffin

You may choose not to untap Tawnos's Coffin during your untap step.
{3}, {T}: Exile target creature and all Auras attached to it. Note the number and kind of counters that were on that creature. When Tawnos's Coffin leaves the battlefield or becomes untapped, return that exiled card to the battlefield under its owner's control tapped with the noted number and kind of counters on it. If you do, return the other exiled cards to the battlefield under their owner's control attached to that permanent.

Wyluli Wolf

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

Frozen Shade

{B}: Frozen Shade gets +1/+1 until end of turn.

Royal Assassin

Jandor's Saddlebags

Obsianus Golem

Shivan Dragon

Flying
{R}: This creature gets +1/+0 until end of turn.

Sol Ring

Vaevictis Asmadi

Flying
At the beginning of your upkeep, sacrifice Vaevictis Asmadi unless you pay {B}{R}{G}.
{B}: Vaevictis Asmadi gets +1/+0 until end of turn.
{R}: Vaevictis Asmadi gets +1/+0 until end of turn.
{G}: Vaevictis Asmadi gets +1/+0 until end of turn.

Mountain

Icy Manipulator

{1}, {T}: Tap target artifact, creature, or land.

Greed

Al-abara's Carpet

{5}, {T}: Prevent all damage that would be dealt to you this turn by attacking creatures without flying.

Crumble

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

Jayemdae Tome

Drudge Skeletons

{B}: Regenerate Drudge Skeletons. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Urborg

{T}: Add {B}.
{T}: Target creature loses first strike or swampwalk until end of turn.

The Hive

{5}, {T}: Create a 1/1 colorless Insect artifact creature token with flying named Wasp. (It can't be blocked except by creatures with flying or reach.)

Island of Wak-Wak

{T}: Target creature with flying has base power 0 until end of turn.

Dancing Scimitar

Flying (This creature can't be blocked except by creatures with flying or reach.)

Evil Presence

Carrion Ants

{1}: Carrion Ants gets +1/+1 until end of turn.

Hammerheim

{T}: Add {R}.
{T}: Target creature loses all landwalk abilities until end of turn.

Swamp

Birds of Paradise

Badlands

Transmutation

Switch target creature's power and toughness until end of turn.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Darkness

Prevent all combat damage that would be dealt this turn.

Uthden Troll

Craw Wurm

Forest

Wall of Spears

Defender (This creature can't attack.)
First strike

Flying Carpet

{2}, {T}: Target creature gains flying until end of turn.

City of Brass

Whenever City of Brass becomes tapped, it deals 1 damage to you.
{T}: Add one mana of any color.

Infernal Medusa

Whenever Infernal Medusa blocks a creature, destroy that creature at end of combat.
Whenever Infernal Medusa becomes blocked by a non-Wall creature, destroy that creature at end of combat.

Vampire Bats

Flying (This creature can't be blocked except by creatures with flying or reach.)
{B}: Vampire Bats gets +1/+0 until end of turn. Activate no more than twice each turn.