Ulvenwald Abomination

Ulvenwald Captive

Defender
{T}: Add {G}.
{5}{G}{G}: Transform Ulvenwald Captive.

Ulvenwald Captive // Ulvenwald Abomination

Lambholt Butcher

At the beginning of each upkeep, if a player cast two or more spells last turn, transform Lambholt Butcher.

Lambholt Pacifist

Lambholt Pacifist can't attack unless you control a creature with power 4 or greater.
At the beginning of each upkeep, if no spells were cast last turn, transform Lambholt Pacifist.

Lambholt Pacifist // Lambholt Butcher

Plated Crusher

Trample
Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Druid of the Cowl

Arborback Stomper

Trample
When Arborback Stomper enters, you gain 5 life.

Ridgescale Tusker

When Ridgescale Tusker enters, put a +1/+1 counter on each other creature you control.

Eyeless Watcher

Devoid (This card has no color.)
When Eyeless Watcher enters, create two 1/1 colorless Eldrazi Scion creature tokens. They have "Sacrifice this creature: Add {C}."

Deathless Behemoth

Vigilance
Sacrifice two Eldrazi Scions: Return Deathless Behemoth from your graveyard to your hand. Activate only as a sorcery.

Forest

Primal Druid

When Primal Druid dies, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Prey Upon

Target creature you control fights target creature you don't control. (Each deals damage equal to its power to the other.)