Bloodrage Vampire

Bloodthirst 1 (If an opponent was dealt damage this turn, this creature enters with a +1/+1 counter on it.)

Sorin's Thirst

Sorin's Thirst deals 2 damage to target creature and you gain 2 life.

Manalith

Forest

Devouring Swarm

Flying
Sacrifice a creature: Devouring Swarm gets +1/+1 until end of turn.

Mind Rot

Disentomb

Return target creature card from your graveyard to your hand.

Plummet

Zombie Goliath

Rampant Growth

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

Chandra's Outrage

Chandra's Outrage deals 4 damage to target creature and 2 damage to that creature's controller.

Stampeding Rhino

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

Warpath Ghoul

Mountain

Swamp

Duskhunter Bat

Bloodthirst 1 (If an opponent was dealt damage this turn, this creature enters with a +1/+1 counter on it.)
Flying

Reclaim

Put target card from your graveyard on top of your library.

Carnage Wurm

Bloodthirst 3 (If an opponent was dealt damage this turn, this creature enters with three +1/+1 counters on it.)
Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

Acidic Slime

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
When Acidic Slime enters, destroy target artifact, enchantment, or land.

Brink of Disaster

Enchant creature or land
When enchanted permanent becomes tapped, destroy it.

Diabolic Tutor

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

Giant Spider

Reach (This creature can block creatures with flying.)