Reclamation Sage

When Reclamation Sage enters, you may destroy target artifact or enchantment.

Dissenter's Deliverance

Destroy target artifact.
Cycling {G} ({G}, Discard this card: Draw a card.)

Harmonize

Viridian Shaman

When Viridian Shaman enters, destroy target artifact.

Manglehorn

When Manglehorn enters, you may destroy target artifact.
Artifacts your opponents control enter tapped.

Liquimetal Torque

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

Forest

Liquimetal Coating

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

Elvish Mystic

Llanowar Elves

Foundation Breaker

When Foundation Breaker enters, you may destroy target artifact or enchantment.
Evoke {1}{G} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)

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.

Myr Landshaper

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