Albino Troll

Echo {1}{G} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
{1}{G}: Regenerate this creature.

Forest

Rancor

Enchant creature
Enchanted creature gets +2/+0 and has trample.
When this Aura is put into a graveyard from the battlefield, return it to its owner's hand.

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.)

Wild Dogs

At the beginning of your upkeep, if a player has more life than each other player, the player with the most life gains control of this creature.
Cycling {2} ({2}, Discard this card: Draw a card.)

Treetop Village

This land enters tapped.
{T}: Add {G}.
{1}{G}: This land becomes a 3/3 green Ape creature with trample until end of turn. It's still a land. (It can deal excess combat damage to the player or planeswalker it's attacking.)

Reclamation Sage

When this creature enters, you may destroy target artifact or enchantment.

Wild Growth

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

Uktabi Orangutan

When this creature enters, destroy target artifact.

Rogue Elephant

When this creature enters, sacrifice it unless you sacrifice a Forest.

Elvish Lyrist

{G}, {T}, Sacrifice this creature: Destroy target enchantment.

Basking Rootwalla

{1}{G}: This creature gets +2/+2 until end of turn. Activate only once each turn.
Madness {0} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Hurricane

Hurricane deals X damage to each creature with flying and each player.

Weatherseed Treefolk

Trample
When this creature dies, return it to its owner's hand.

Giant Growth

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

Silvos, Rogue Elemental

Gaea's Cradle

{T}: Add {G} for each creature you control.

River Boa

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)
{G}: Regenerate this creature.

Pouncing Jaguar

Echo {G} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)