Natural State

Destroy target artifact or enchantment with mana value 3 or less.

Viridian Shaman

When Viridian Shaman enters, destroy target artifact.

Splinter

Exile target artifact. Search its controller's graveyard, hand, and library for all cards with the same name as that artifact and exile them. Then that player shuffles.

Llanowar Elves

Oxidize

Destroy target artifact. It can't be regenerated.

Liquimetal Coating

{T}: Target permanent becomes an artifact in addition to its other types until end of turn.

Viridian Revel

Whenever an artifact is put into an opponent's graveyard from the battlefield, you may draw a card.

Planar Portal

{6}, {T}: Search your library for a card, put that card into your hand, then shuffle.

Field of Ruin

{T}: Add {C}.
{2}, {T}, Sacrifice Field of Ruin: Destroy target nonbasic land an opponent controls. Each player searches their library for a basic land card, puts it onto the battlefield, then shuffles.

Tel-Jilad Justice

Destroy target artifact. Scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Forest

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.)

Reclamation Sage

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

Myr Landshaper

{T}: Target land becomes an artifact in addition to its other types until end of turn.