Gaea's Revenge

This spell can't be countered.
Haste
Gaea's Revenge can't be the target of nongreen spells or abilities from nongreen sources.

Obstinate Baloth

When Obstinate Baloth enters, you gain 4 life.
If a spell or ability an opponent controls causes you to discard Obstinate Baloth, put it onto the battlefield instead of putting it into your graveyard.

Sunpetal Grove

Sunpetal Grove enters tapped unless you control a Forest or a Plains.
{T}: Add {G} or {W}.

Forest

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.

Condemn

Put target attacking creature on the bottom of its owner's library. Its controller gains life equal to its toughness.

Celestial Purge

Terramorphic Expanse

{T}, Sacrifice Terramorphic Expanse: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Plummet

Birds of Paradise

Baneslayer Angel

Flying, first strike, lifelink, protection from Demons and from Dragons

Llanowar Elves

Plains

Garruk Wildspeaker

+1: Untap two target lands.
−1: Create a 3/3 green Beast creature token.
−4: Creatures you control get +3/+3 and gain trample until end of turn.

War Priest of Thune

When War Priest of Thune enters, you may destroy target enchantment.

Garruk's Companion

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

Serra Angel

Flying
Vigilance (Attacking doesn't cause this creature to tap.)

Protean Hydra

Protean Hydra enters with X +1/+1 counters on it.
If damage would be dealt to Protean Hydra, prevent that damage and remove that many +1/+1 counters from it.
Whenever a +1/+1 counter is removed from Protean Hydra, put two +1/+1 counters on it at the beginning of the next end step.