Prevent all combat damage that would be dealt this turn.

Might of Oaks

Target creature gets +7/+7 until end of turn.

Giant Growth

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

Giant Spider

Reach (This creature can block creatures with flying.)

Regenerate

Regenerate target creature. (The next time that creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Howl of the Night Pack

Create a 2/2 green Wolf creature token for each Forest you control.

Emerald Oryx

Forestwalk (This creature can't be blocked as long as defending player controls a Forest.)

Llanowar Elves

Bramble Creeper

Whenever Bramble Creeper attacks, it gets +5/+0 until end of turn.

Craw Wurm

Windstorm

Windstorm deals X damage to each creature with flying.

Deadly Recluse

Reach (This creature can block creatures with flying.)
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

Awakener Druid

When Awakener Druid enters, target Forest becomes a 4/5 green Treefolk creature for as long as Awakener Druid remains on the battlefield. It's still a land.

Enormous Baloth

Centaur Courser

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.

Rampant Growth

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

Elvish Archdruid

Other Elf creatures you control get +1/+1.
{T}: Add {G} for each Elf you control.

Wurm's Tooth

Whenever a player casts a green spell, you may gain 1 life.

Cudgel Troll

{G}: Regenerate Cudgel Troll. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Entangling Vines

Enchant tapped creature
Enchanted creature doesn't untap during its controller's untap step.

Prized Unicorn

All creatures able to block Prized Unicorn do so.

Kalonian Behemoth

Shroud (This creature can't be the target of spells or abilities.)

Naturalize

Nature's Spiral

Return target permanent card from your graveyard to your hand.

Mold Adder

Whenever an opponent casts a blue or black spell, you may put a +1/+1 counter on this creature.

Forest

Borderland Ranger

When Borderland Ranger enters, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Elvish Visionary

When Elvish Visionary enters, draw a card.

Oakenform

Enchant creature
Enchanted creature gets +3/+3.

Bountiful Harvest

You gain 1 life for each land you control.

Mist Leopard

Stampeding Rhino

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

Overrun

Creatures you control get +3/+3 and gain trample until end of turn. (Each of those creatures can deal excess combat damage to the player or planeswalker it's attacking.)