Elvish Mystic

Reclamation Sage

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

Llanowar Elves

Beast Within

Destroy target permanent. Its controller creates a 3/3 green Beast creature token.

Wickerbough Elder

Wickerbough Elder enters with a -1/-1 counter on it.
{G}, Remove a -1/-1 counter from Wickerbough Elder: Destroy target artifact or enchantment.

Raking Canopy

Whenever a creature with flying attacks you, Raking Canopy deals 4 damage to it.

Forest

Liquimetal Coating

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

Myr Landshaper

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

Oxidize

Destroy target artifact. It can't be regenerated.

Relic of Progenitus

{T}: Target player exiles a card from their graveyard.
{1}, Exile Relic of Progenitus: Exile all graveyards. Draw a card.

Harmonize

Viridian Shaman

When Viridian Shaman enters, destroy target artifact.

Dissenter's Deliverance

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

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.

Thragtusk

When Thragtusk enters, you gain 5 life.
When Thragtusk leaves the battlefield, create a 3/3 green Beast creature token.

Conclave Naturalists

When Conclave Naturalists enters, you may destroy target artifact or enchantment.