Emerald Medallion

Green spells you cast cost {1} less to cast.

Sanctum Weaver

{T}: Add X mana of any one color, where X is the number of enchantments you control.

Burnished Hart

{3}, Sacrifice Burnished Hart: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

Three Visits

Search your library for a Forest card, put it onto the battlefield, then shuffle.

Wild Growth

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

Ilysian Caryatid

{T}: Add one mana of any color. If you control a creature with power 4 or greater, add two mana of any one color instead.

Manaweft Sliver

Sliver creatures you control have "{T}: Add one mana of any color."

Volo, Guide to Monsters

Whenever you cast a creature spell that doesn't share a creature type with a creature you control or a creature card in your graveyard, copy that spell. (A copy of a creature spell becomes a token.)

Overgrown Battlement

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

Lotus Cobra

Landfall — Whenever a land enters the battlefield under your control, add one mana of any color.

Birds of Paradise

Rampant Growth

Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Loam Dryad

{T}, Tap an untapped creature you control: Add one mana of any color.

Walking Atlas

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

Nature's Lore

Search your library for a Forest card, put that card onto the battlefield, then shuffle.

Farseek

Search your library for a Plains, Island, Swamp, or Mountain card, put it onto the battlefield tapped, then shuffle.