Hidden Guerrillas

When an opponent casts an artifact spell, if Hidden Guerrillas is an enchantment, Hidden Guerrillas becomes a 5/3 Soldier creature with trample.

Forest

Elvish Lyrist

{G}, {T}, Sacrifice Elvish Lyrist: Destroy target enchantment.

Vernal Bloom

Whenever a Forest is tapped for mana, its controller adds an additional {G}.

Endless Wurm

Trample
At the beginning of your upkeep, sacrifice Endless Wurm unless you sacrifice an enchantment.

Spreading Algae

Enchant Swamp
When enchanted land becomes tapped, destroy it.
When Spreading Algae is put into a graveyard from the battlefield, return Spreading Algae to its owner's hand.

Deathcoil Wurm

You may have Deathcoil Wurm assign its combat damage as though it weren't blocked.

Skyshroud War Beast

Trample
As Skyshroud War Beast enters, choose an opponent.
Skyshroud War Beast's power and toughness are each equal to the number of nonbasic lands the chosen player controls.

Mirri, Cat Warrior

First strike, forestwalk, vigilance (This creature deals combat damage before creatures without first strike, it can't be blocked as long as defending player controls a Forest, and attacking doesn't cause this creature to tap.)

Worn Powerstone

Worn Powerstone enters tapped.
{T}: Add {C}{C}.

Argothian Elder

Mulch

Reveal the top four cards of your library. Put all land cards revealed this way into your hand and the rest into your graveyard.

Sphere of Resistance

Argothian Enchantress

Shroud (This creature can't be the target of spells or abilities.)
Whenever you cast an enchantment spell, draw a card.

Cartographer

When Cartographer enters, you may return target land card from your graveyard to your hand.

Pygmy Troll

Whenever Pygmy Troll becomes blocked by a creature, Pygmy Troll gets +1/+1 until end of turn.
{G}: Regenerate Pygmy Troll.

Null Brooch

{2}, {T}, Discard your hand: Counter target noncreature spell.

Crystal Chimes

{3}, {T}, Sacrifice Crystal Chimes: Return all enchantment cards from your graveyard to your hand.

Tree Monkey

Reach (This creature can block creatures with flying.)

Retaliation

Creatures you control have "Whenever this creature becomes blocked by a creature, this creature gets +1/+1 until end of turn."

Greener Pastures

At the beginning of each player's upkeep, if that player controls more lands than each other player, the player creates a 1/1 green Saproling creature token.

Cathodion

Claws of Gix

{1}, Sacrifice a permanent: You gain 1 life.

Reclaim

Put target card from your graveyard on top of your library.

Treefolk Seedlings

Treefolk Seedlings's toughness is equal to the number of Forests you control.

Greater Good

Sacrifice a creature: Draw cards equal to the sacrificed creature's power, then discard three cards.

Chimeric Staff

{X}: Chimeric Staff becomes an X/X Construct artifact creature until end of turn.

Karn, Silver Golem

Whenever Karn, Silver Golem blocks or becomes blocked, it gets -4/+4 until end of turn.
{1}: Target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value until end of turn.

Hidden Herd

When an opponent plays a nonbasic land, if Hidden Herd is an enchantment, Hidden Herd becomes a 3/3 Beast creature.

Titania's Chosen

Whenever a player casts a green spell, put a +1/+1 counter on Titania's Chosen.

Abundance

If you would draw a card, you may instead choose land or nonland and reveal cards from the top of your library until you reveal a card of the chosen kind. Put that card into your hand and put all other cards revealed this way on the bottom of your library in any order.

Slippery Karst

Slippery Karst enters tapped.
{T}: Add {G}.
Cycling {2} ({2}, Discard this card: Draw a card.)

Hidden Spider

When an opponent casts a creature spell with flying, if Hidden Spider is an enchantment, Hidden Spider becomes a 3/5 Spider creature with reach. (It can block creatures with flying.)

Bequeathal

Enchant creature
When enchanted creature dies, you draw two cards.

Carpet of Flowers

At the beginning of each of your main phases, if you haven't added mana with this ability this turn, you may add X mana of any one color, where X is the number of Islands target opponent controls.

Constant Mists

Buyback—Sacrifice a land. (You may sacrifice a land in addition to any other costs as you cast this spell. If you do, put this card into your hand as it resolves.)
Prevent all combat damage that would be dealt this turn.

Hidden Ancients

When an opponent casts an enchantment spell, if Hidden Ancients is an enchantment, Hidden Ancients becomes a 5/5 Treefolk creature.

Horn of Greed

Whenever a player plays a land, that player draws a card.

Lull

Prevent all combat damage that would be dealt this turn.
Cycling {2} ({2}, Discard this card: Draw a card.)

Fortitude

Enchant creature
Sacrifice a Forest: Regenerate enchanted creature.
When Fortitude is put into a graveyard from the battlefield, return Fortitude to its owner's hand.

Exploration

You may play an additional land on each of your turns.

Primal Rage

Creatures you control have trample. (A creature with trample can deal excess combat damage to the player or planeswalker it's attacking.)

Blasted Landscape

{T}: Add {C}.
Cycling {2} ({2}, Discard this card: Draw a card.)

Child of Gaea

Trample
At the beginning of your upkeep, sacrifice Child of Gaea unless you pay {G}{G}.
{1}{G}: Regenerate Child of Gaea.

Overgrowth

Enchant land
Whenever enchanted land is tapped for mana, its controller adds an additional {G}{G}.

Lone Wolf

You may have Lone Wolf assign its combat damage as though it weren't blocked.

Keeper of the Beasts

{G}, {T}: Choose target opponent who controls more creatures than you do as you activate this ability. Create a 2/2 green Beast creature token.

Blanchwood Armor

Enchant creature
Enchanted creature gets +1/+1 for each Forest you control.

Burgeoning

Whenever an opponent plays a land, you may put a land card from your hand onto the battlefield.

Salvage

Umbilicus

At the beginning of each player's upkeep, that player may pay 2 life. If they don't, they return a permanent they control to its owner's hand.

War Dance

At the beginning of your upkeep, you may put a verse counter on War Dance.
Sacrifice War Dance: Target creature gets +X/+X until end of turn, where X is the number of verse counters on War Dance.

Gaea's Embrace

Enchant creature
Enchanted creature gets +3/+3 and has trample.
{G}: Regenerate enchanted creature.

Citanul Flute

{X}, {T}: Search your library for a creature card with mana value X or less, reveal it, put it into your hand, then shuffle.

Survival of the Fittest

{G}, Discard a creature card: Search your library for a creature card, reveal that card, put it into your hand, then shuffle.

Sword of the Chosen

{T}: Target legendary creature gets +2/+2 until end of turn.

Fertile Ground

Enchant land
Whenever enchanted land is tapped for mana, its controller adds an additional one mana of any color.

Erratic Portal

{1}, {T}: Return target creature to its owner's hand unless its controller pays {1}.

Predatory Hunger

Enchant creature
Whenever an opponent casts a creature spell, put a +1/+1 counter on enchanted creature.

Sylvan Yeti

Sylvan Yeti's power is equal to the number of cards in your hand.

Metrognome

When a spell or ability an opponent controls causes you to discard Metrognome, create four 1/1 colorless Gnome artifact creature tokens.
{4}, {T}: Create a 1/1 colorless Gnome artifact creature token.

Priest of Titania

{T}: Add {G} for each Elf on the battlefield.

Dragon Blood

{3}, {T}: Put a +1/+1 counter on target creature.

Gaea's Bounty

Search your library for up to two Forest cards, reveal those cards, put them into your hand, then shuffle.