Urborg

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

Demonic Tutor

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

Giant Growth

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

Triskelion

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

Jayemdae Tome

Llanowar Elves

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.)

Hypnotic Specter

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

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.

Strip Mine

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

Forest

Terror

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

Hurricane

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

Ice Storm

Scavenger Folk

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

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.

Crumble

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

Elves of Deep Shadow

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

Aeolipile

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

Animate Dead

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

Tranquility

Sinkhole

Tsunami

Maze of Ith

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