Plains

Celestial Force

At the beginning of each upkeep, you gain 3 life.

Creeping Trailblazer

Other Elementals you control get +1/+0.
{2}{R}{G}: This creature gets +1/+1 until end of turn for each Elemental you control.

Forest

Mystic Monstrosity

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

Mystic Skull

{1}, {T}: Add one mana of any color.
{5}, {T}: Transform this artifact.

Mystic Skull // Mystic Monstrosity

Horde of Notions

Vigilance, trample, haste
{W}{U}{B}{R}{G}: You may play target Elemental card from your graveyard without paying its mana cost.

Maelstrom Wanderer

Creatures you control have haste.
Cascade, cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order. Then do it again.)

Yargle and Multani

Prophetic Prism

When this artifact enters, draw a card.
{1}, {T}: Add one mana of any color.

Healer of the Glade

When this creature enters, you gain 3 life.

Fusion Elemental

Swamp

Mountain

Rootrider Faun

{T}: Add {G}.
{1}, {T}: Add one mana of any color.

Island

Buried Alive

Search your library for up to three creature cards, put them into your graveyard, then shuffle.