Thresher Beast

Whenever this creature becomes blocked, defending player sacrifices a land of their choice.

Blastoderm

Shroud (This creature can't be the target of spells or abilities.)
Fading 3 (This creature enters with three fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can't, sacrifice it.)

Skyshroud Claim

Search your library for up to two Forest cards, put them onto the battlefield, then shuffle.

Stampede Driver

{1}{G}, {T}, Discard a card: Creatures you control get +1/+1 and gain trample until end of turn.

Hickory Woodlot

This land enters tapped with two depletion counters on it.
{T}, Remove a depletion counter from this land: Add {G}{G}. If there are no depletion counters on this land, sacrifice it.

Darba

At the beginning of your upkeep, sacrifice this creature unless you pay {G}{G}.

Animate Land

Until end of turn, target land becomes a 3/3 creature that's still a land.

Spitting Spider

Reach (This creature can block creatures with flying.)
Sacrifice a land: This creature deals 1 damage to each creature with flying.

Deepwood Wolverine

Whenever this creature becomes blocked, it gets +2/+0 until end of turn.

Silverglade Elemental

When this creature enters, you may search your library for a Forest card, put that card onto the battlefield, then shuffle.

Wild Might

Target creature gets +1/+1 until end of turn. That creature gets an additional +4/+4 until end of turn unless any player pays {2}.

Invigorate

If you control a Forest, rather than pay this spell's mana cost, you may have an opponent gain 3 life.
Target creature gets +4/+4 until end of turn.

Pygmy Razorback

Forest

Living Terrain

Enchant land
Enchanted land is a 5/6 green Treefolk creature that's still a land.

Avatar of Might

If an opponent controls at least four more creatures than you, this spell costs {6} less to cast.
Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

Snag

You may discard a Forest card rather than pay this spell's mana cost.
Prevent all combat damage that would be dealt by unblocked creatures this turn.

Vine Trellis

Defender (This creature can't attack.)
{T}: Add {G}.

Treetop Bracers

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)
Enchanted creature gets +1/+1 and can't be blocked except by creatures with flying.

Tranquility

Jolrael's Favor

Flash
Enchant creature
{1}{G}: Regenerate enchanted creature.

Hunted Wumpus

When this creature enters, each other player may put a creature card from their hand onto the battlefield.

Seal of Strength

Sacrifice this enchantment: Target creature gets +3/+3 until end of turn.

Vintara Elephant

Trample
{3}: This creature loses trample until end of turn. Any player may activate this ability.

Spore Frog

Sacrifice this creature: Prevent all combat damage that would be dealt this turn.

Vitalizing Wind

Creatures you control get +7/+7 until end of turn.

Lumbering Satyr

All creatures have forestwalk. (They can't be blocked as long as defending player controls a Forest.)