Mishra's Factory

{T}: Add {C}.
{1}: This land 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.

Llanowar Elves

Gaseous Form

Enchant creature
Prevent all combat damage that would be dealt to and dealt by enchanted creature.

Swamp

Frozen Shade

{B}: This creature gets +1/+1 until end of turn.

Forest

Strip Mine

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

Ironroot Treefolk

Marsh Viper

Whenever this creature deals damage to a player, that player gets two poison counters. (A player with ten or more poison counters loses the game.)

Wall of Spears

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

Circle of Protection: White

{1}: The next time a white source of your choice would deal damage to you this turn, prevent that damage.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Island

Dark Ritual

Lifeforce

Thicket Basilisk

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

Cleanse

Mana Short

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

Fungusaur

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

Counterspell

War Mammoth

Time Walk

Channel

Until end of turn, any time you could activate a mana ability, you may pay 1 life. If you do, add {C}.

Wild Growth

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

Instill Energy

Enchant creature
Enchanted creature can attack as though it had haste.
{0}: Untap enchanted creature. Activate only during your turn and only once each turn.

Carnivorous Plant

Prodigal Sorcerer

{T}: This creature deals 1 damage to any target.

Howl from Beyond

Target creature gets +X/+0 until end of turn.

Craw Wurm

Flying Carpet

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

Ashes to Ashes

Exile two target nonartifact creatures. Ashes to Ashes deals 5 damage to you.

Elven Riders

This creature can't be blocked except by Walls and/or creatures with flying.

City of Brass

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

Ghost Ship

Flying
{U}{U}{U}: Regenerate this creature.

Lifetap

Whenever a Forest an opponent controls becomes tapped, you gain 1 life.

Shatter

Nightmare

Flying (This creature can't be blocked except by creatures with flying or reach.)
Nightmare's power and toughness are each equal to the number of Swamps you control.

Shanodin Dryads

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