Forest

Forbidding Watchtower

Forbidding Watchtower enters tapped.
{T}: Add {W}.
{1}{W}: Forbidding Watchtower becomes a 1/5 white Soldier creature until end of turn. It's still a land.

Skyshroud Elf

Serra Avatar

Serra Avatar's power and toughness are each equal to your life total.
When Serra Avatar is put into a graveyard from anywhere, shuffle it into its owner's library.

Kudzu

Enchant land
When enchanted land becomes tapped, destroy it. That land's controller may attach Kudzu to a land of their choice.

Elvish Piper

{G}, {T}: You may put a creature card from your hand onto the battlefield.

Savannah

Argothian Wurm

Trample
When Argothian Wurm enters, any player may sacrifice a land of their choice. If a player does, put Argothian Wurm on top of its owner's library.

Thorn Elemental

You may have Thorn Elemental assign its combat damage as though it weren't blocked.

Llanowar Elves

Silvos, Rogue Elemental

Trample
{G}: Regenerate Silvos, Rogue Elemental.

Plains

Armageddon

Winter's Grasp

Treetop Village

Treetop Village enters tapped.
{T}: Add {G}.
{1}{G}: Treetop Village 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.)

Pendelhaven

{T}: Add {G}.
{T}: Target 1/1 creature gets +1/+2 until end of turn.

Wasteland

{T}: Add {C}.
{T}, Sacrifice Wasteland: Destroy target nonbasic land.

Yavimaya Hollow

{T}: Add {C}.
{G}, {T}: Regenerate target creature.

Priest of Titania

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

Thermokarst

Destroy target land. If that land was a snow land, you gain 1 life.

Creeping Mold

Destroy target artifact, enchantment, or land.