Primordial Hydra

Carnage Wurm

Creature — Wurm (6/6)

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

Skinshifter

Creature — Human Shaman (1/1)

: Choose one. Activate only once each turn.
• Until end of turn, Skinshifter becomes a Rhino with base power and toughness 4/4 and gains trample.
• Until end of turn, Skinshifter becomes a Bird with base power and toughness 2/2 and gains flying.
• Until end of turn, Skinshifter becomes a Plant with base power and toughness 0/8.

Stormblood Berserker

Creature — Human Berserker (1/1)

Bloodthirst 2 (If an opponent was dealt damage this turn, this creature enters the battlefield with two +1/+1 counters on it.)
Menace (This creature can't be blocked except by two or more creatures.)

Garruk's Companion

Creature — Beast (3/2)

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

Jade Mage

Creature — Human Shaman (2/1)

: Create a 1/1 green Saproling creature token.

Lurking Crocodile

Creature — Crocodile (2/2)

Bloodthirst 1 (If an opponent was dealt damage this turn, this creature enters the battlefield with a +1/+1 counter on it.)
Islandwalk (This creature can't be blocked as long as defending player controls an Island.)

Runeclaw Bear

Creature — Bear (2/2)

Duskhunter Bat

Creature — Bat (1/1)

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

Primeval Titan

Creature — Giant (6/6)

Trample
Whenever Primeval Titan enters the battlefield or attacks, you may search your library for up to two land cards, put them onto the battlefield tapped, then shuffle.

Stingerfling Spider

Creature — Spider (2/5)

Reach
When Stingerfling Spider enters the battlefield, you may destroy target creature with flying.

Acidic Slime

Creature — Ooze (2/2)

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

Blood Seeker

Creature — Vampire Shaman (1/1)

Whenever a creature enters the battlefield under an opponent's control, you may have that player lose 1 life.

Phantasmal Image

Creature — Illusion (0/0)

You may have Phantasmal Image enter the battlefield as a copy of any creature on the battlefield, except it's an Illusion in addition to its other types and it has "When this creature becomes the target of a spell or ability, sacrifice it."

Garruk's Horde

Creature — Beast (7/7)

Trample
Play with the top card of your library revealed.
You may cast creature spells from the top of your library. (Do this only any time you could cast that creature spell. You still pay the spell's costs.)

Griffin Rider

Creature — Human Knight (1/1)

As long as you control a Griffin creature, Griffin Rider gets +3/+3 and has flying.

Reassembling Skeleton

Creature — Skeleton Warrior (1/1)

: Return Reassembling Skeleton from your graveyard to the battlefield tapped.

Arachnus Spinner

Creature — Spider (5/7)

Reach
Tap an untapped Spider you control: Search your graveyard and/or library for a card named Arachnus Web and put it onto the battlefield attached to target creature. If you search your library this way, shuffle.

Bloodlord of Vaasgoth

Creature — Vampire Warrior (3/3)

Bloodthirst 3 (If an opponent was dealt damage this turn, this creature enters the battlefield with three +1/+1 counters on it.)
Flying
Whenever you cast a Vampire creature spell, it gains bloodthirst 3.

Crimson Mage

Creature — Human Shaman (2/1)

: Target creature you control gains haste until end of turn. (It can attack and this turn.)

Dungrove Elder

Creature — Treefolk (0/0)

Hexproof (This creature can't be the target of spells or abilities your opponents control.)
Dungrove Elder's power and toughness are each equal to the number of Forests you control.