Spitting Slug

Whenever this creature blocks or becomes blocked, you may pay {1}{G}. If you do, this creature gains first strike until end of turn. Otherwise, each creature blocking or blocked by this creature gains first strike until end of turn.

Terror

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

Icy Manipulator

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

Sinkhole

Gloom

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

Pendelhaven

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

Urborg

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

Aeolipile

{1}, {T}, Sacrifice this artifact: It deals 2 damage to any target.

Elves of Deep Shadow

{T}: Add {B}. This creature deals 1 damage to you.

Tranquility

Bayou

Forest

Scavenger Folk

{G}, {T}, Sacrifice this creature: Destroy target artifact.

Swamp

Scryb Sprites

Ice Storm

Maze of Ith

{T}: Untap target attacking creature. Prevent all combat damage that would be dealt to and dealt by that creature this turn.

Sol Ring

Regrowth

Return target card from your graveyard to your hand.

Mind Twist

Target player discards X cards at random.

Demonic Tutor

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

Sylvan Library

At the beginning of your draw step, you may draw two additional cards. If you do, choose two cards in your hand drawn this turn. For each of those cards, pay 4 life or put the card on top of your library.

Jayemdae Tome

Strip Mine

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

Meekstone

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

Berserk

Cast this spell only before the combat damage step.
Target creature gains trample and gets +X/+0 until end of turn, where X is its power. At the beginning of the next end step, destroy that creature if it attacked this turn.

Llanowar Elves

Crumble

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

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.

Hurricane

Hurricane deals X damage to each creature with flying and each player.

Erhnam Djinn

At the beginning of your upkeep, target non-Wall creature an opponent controls gains forestwalk until your next upkeep. (It can't be blocked as long as defending player controls a Forest.)