Mana Short

Tap all lands target player controls and that player loses all unspent mana.

Glasses of Urza

Water Elemental

Steal Artifact

Enchant artifact
You control enchanted artifact.

Island

Air Elemental

Conservator

{3}, {T}: Prevent the next 2 damage that would be dealt to you this turn.

Wall of Ice

Animate Artifact

Enchant artifact
As long as enchanted artifact isn't a creature, it's an artifact creature with power and toughness each equal to its mana value.

Ice Storm

Shanodin Dryads

Forestwalk (This creature can't be blocked as long as defending player controls a Forest.)

Drain Power

Target player activates a mana ability of each land they control. Then that player loses all unspent mana and you add the mana lost this way.

Wall of Air

Defender, flying (This creature can't attack, and it can block creatures with flying.)

Sol Ring

Clone

You may have Clone enter as a copy of any creature on the battlefield.

Grizzly Bears

Verduran Enchantress

Whenever you cast an enchantment spell, you may draw a card.

Wall of Wood

Disrupting Scepter

{3}, {T}: Target player discards a card. Activate only during your turn.

Pirate Ship

Pirate Ship can't attack unless defending player controls an Island.
{T}: Pirate Ship deals 1 damage to any target.
When you control no Islands, sacrifice Pirate Ship.

Scryb Sprites

Cockatrice

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

Mox Sapphire

Rod of Ruin

{3}, {T}: Rod of Ruin deals 1 damage to any target.

Elvish Archers

Psionic Blast

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

Forest

Tropical Island

Merfolk of the Pearl Trident

Twiddle

You may tap or untap target artifact, creature, or land.

Crystal Rod

Whenever a player casts a blue spell, you may pay {1}. If you do, you gain 1 life.

Basalt Monolith

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

Lord of Atlantis

Other Merfolk get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)

Nevinyrral's Disk

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

Ley Druid

Living Wall

Defender (This creature can't attack.)
{1}: Regenerate Living Wall.

Wall of Brambles

Defender (This creature can't attack.)
{G}: Regenerate Wall of Brambles.

Forcefield

{1}: The next time an unblocked creature of your choice would deal combat damage to you this turn, prevent all but 1 of that damage.

Psychic Venom

Enchant land
Whenever enchanted land becomes tapped, Psychic Venom deals 2 damage to that land's controller.

Birds of Paradise

Jayemdae Tome

Braingeyser

Obsianus Golem

Wild Growth

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

Prodigal Sorcerer

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

Mahamoti Djinn

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

Howling Mine

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

Copper Tablet

At the beginning of each player's upkeep, Copper Tablet deals 1 damage to that player.

Fungusaur

Whenever Fungusaur is dealt damage, put a +1/+1 counter on it.

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.)

War Mammoth

Vesuvan Doppelganger

You may have Vesuvan Doppelganger enter as a copy of any creature on the battlefield, except it doesn't copy that creature's color and it has "At the beginning of your upkeep, you may have this creature become a copy of target creature, except it doesn't copy that creature's color and it has this ability."

Regeneration

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)
{G}: Regenerate enchanted creature. (The next time that creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Stream of Life

Phantom Monster

Jade Statue

{2}: Jade Statue becomes a 3/6 Golem artifact creature until end of combat. Activate only during combat.

Icy Manipulator

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

Regrowth

Return target card from your graveyard to your hand.

Wall of Water

Defender (This creature can't attack.)
{U}: Wall of Water gets +1/+0 until end of turn.

Giant Growth

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

Llanowar Elves

Clockwork Beast

Clockwork Beast enters with seven +1/+0 counters on it.
At end of combat, if Clockwork Beast attacked or blocked this combat, remove a +1/+0 counter from it.
{X}, {T}: Put up to X +1/+0 counters on Clockwork Beast. This ability can't cause the total number of +1/+0 counters on Clockwork Beast to be greater than seven. Activate only during your upkeep.

Black Lotus

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

Copy Artifact

You may have Copy Artifact enter as a copy of any artifact on the battlefield, except it's an enchantment in addition to its other types.

Ironroot Treefolk

Giant Spider

Reach (This creature can block creatures with flying.)

Feedback

Enchant enchantment
At the beginning of the upkeep of enchanted enchantment's controller, Feedback deals 1 damage to that player.