Omnath, Locus of Rage

Landfall — Whenever a land you control enters, create a 5/5 red and green Elemental creature token.
Whenever Omnath or another Elemental you control dies, Omnath deals 3 damage to any target.

Rugged Highlands

This land enters tapped.
When this land enters, you gain 1 life.
{T}: Add {R} or {G}.

Mountain

Molten Tributary

({T}: Add {U} or {R}.)
This land enters tapped.

Pestermite

Flash
Flying
When this creature enters, you may tap or untap target permanent.

Wooded Ridgeline

({T}: Add {R} or {G}.)
This land enters tapped.

Woodland Stream

This land enters tapped.
{T}: Add {G} or {U}.

Timber Gorge

This land enters tapped.
{T}: Add {R} or {G}.

Frontier Bivouac

This land enters tapped.
{T}: Add {G}, {U}, or {R}.

Swiftwater Cliffs

This land enters tapped.
When this land enters, you gain 1 life.
{T}: Add {U} or {R}.

Island

Highland Lake

This land enters tapped.
{T}: Add {U} or {R}.

Izzet Guildgate

Treasure Hunt

Reveal cards from the top of your library until you reveal a nonland card, then put all cards revealed this way into your hand.

Risen Reef

Whenever this creature or another Elemental you control enters, look at the top card of your library. If it's a land card, you may put it onto the battlefield tapped. If you don't put the card onto the battlefield, put it into your hand.

Tangled Islet

({T}: Add {G} or {U}.)
This land enters tapped.

Forest

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.)

Simic Guildgate

Ayula's Influence

Discard a land card: Create a 2/2 green Bear creature token.

Gruul Guildgate

Kiki-Jiki, Mirror Breaker

Haste
{T}: Create a token that's a copy of target nonlegendary creature you control, except it has haste. Sacrifice it at the beginning of the next end step.

Thornwood Falls

This land enters tapped.
When this land enters, you gain 1 life.
{T}: Add {G} or {U}.