Barl's Cage

{3}: Target creature doesn't untap during its controller's next untap step.

Gaea's Touch

{0}: You may put a basic Forest card from your hand onto the battlefield. Activate only as a sorcery and only once each turn.
Sacrifice Gaea's Touch: Add {G}{G}.

Fyndhorn Elder

Llanowar Elves

The Hive

{5}, {T}: Create a 1/1 colorless Insect artifact creature token with flying named Wasp. (It can't be blocked except by creatures with flying or reach.)

Rampant Growth

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

Elvish Hunter

{1}{G}, {T}: Target creature doesn't untap during its controller's next untap step.

Kaysa

Elven Riders

Elven Riders can't be blocked except by Walls and/or creatures with flying.

Thawing Glaciers

Thawing Glaciers enters tapped.
{1}, {T}: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. Return Thawing Glaciers to its owner's hand at the beginning of the next cleanup step.

Fyndhorn Elves

Elvish Champion

Other Elf creatures get +1/+1 and have forestwalk. (They can't be blocked as long as defending player controls a Forest.)

Floodwater Dam

Elvish Archers

Gaea's Liege

As long as Gaea's Liege isn't attacking, its power and toughness are each equal to the number of Forests you control. As long as Gaea's Liege is attacking, its power and toughness are each equal to the number of Forests defending player controls.
{T}: Target land becomes a Forest until Gaea's Liege leaves the battlefield.

Forest

Malachite Talisman

Whenever a player casts a green spell, you may pay {3}. If you do, untap target permanent.

People of the Woods

People of the Woods's toughness is equal to the number of Forests you control.

Aladdin's Ring

{8}, {T}: Aladdin's Ring deals 4 damage to any target.

Nature's Lore

Search your library for a Forest card, put that card onto the battlefield, then shuffle.

Thelonite Monk

{T}, Sacrifice a green creature: Target land becomes a Forest. (This effect lasts indefinitely.)