Modern Horizons 3 Commander

Dreamroot Cascade

Dreamroot Cascade

Land
This land enters tapped unless you control two or more other lands.
{T}: Add {G} or {U}.
Soothing whispers invite travelers to step closer, closer, closer . . . until they vanish soundlessly beneath the surface.
Eldrazi Temple

Eldrazi Temple

Land
{T}: Add {C}.
{T}: Add {C}{C}. Spend this mana only to cast colorless Eldrazi spells or activate abilities of colorless Eldrazi.
Each temple is a door to a horrible future.
Evolving Wilds

Evolving Wilds

Land
{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.
"The wilds are unpredictable. Rivers change course, trees shuffle and bend, rocks split and scurry. But mark my words, traveler—the main thing that'll change out there is you."
—Sturwynn, Boundary Lands ranger
Exotic Orchard

Exotic Orchard

Land
{T}: Add one mana of any color that a land an opponent controls could produce.
"It was a strange morning. When we awoke, we found our trees transformed. We didn't know whether to water them or polish them."
—Pulan, Bant orchardist
Flooded Grove

Flooded Grove

Land
{T}: Add {C}.
{G/U}, {T}: Add {G}{G}, {G}{U}, or {U}{U}.
At full moon, the river seeps over its banks and crawls through the woods like a blanket of serpents.
Forgotten Cave

Forgotten Cave

Land
This land enters tapped.
{T}: Add {R}.
Cycling {R}
Frostboil Snarl

Frostboil Snarl

Land
As this land enters, you may reveal an Island or Mountain card from your hand. If you don't, this land enters tapped.
{T}: Add {U} or {R}.
A smoldering storm of chilling fire.
Furycalm Snarl

Furycalm Snarl

Land
As this land enters, you may reveal a Mountain or Plains card from your hand. If you don't, this land enters tapped.
{T}: Add {R} or {W}.
A seething locus of reverent rage.
Glimmerpost

Glimmerpost

Land - Locus
When this land enters, you gain 1 life for each Locus on the battlefield.
{T}: Add {C}.
What once spied upon Mirrodin from above now waits below for another to assume control.
Hashep Oasis

Hashep Oasis

Land - Desert
{T}: Add {C}.
{T}, Pay 1 life: Add {G}.
{1}{G}{G}, {T}, Sacrifice a Desert: Target creature gets +3/+3 until end of turn. Activate only as a sorcery.
Hidden Cataract

Hidden Cataract

Land - Cave
This land enters tapped.
{T}: Add {U}.
{4}{U}, {T}, Sacrifice this land: Discover 4. Activate only as a sorcery.
Hidden Nursery

Hidden Nursery

Land - Cave
This land enters tapped.
{T}: Add {G}.
{4}{G}, {T}, Sacrifice this land: Discover 4. Activate only as a sorcery.
Izzet Boilerworks

Izzet Boilerworks

Land
This land enters tapped.
When this land enters, return a land you control to its owner's hand.
{T}: Add {U}{R}.
Karplusan Forest

Karplusan Forest

Land
{T}: Add {C}.
{T}: Add {R} or {G}. This land deals 1 damage to you.
Between jagged, snowcapped peaks, the dense bands of hardy evergreens provide the perfect cover for roving bands of orc and goblin raiders.
Kessig Wolf Run

Kessig Wolf Run

Land
{T}: Add {C}.
{X}{R}{G}, {T}: Target creature gets +X/+0 and gains trample until end of turn.
When a werewolf changes for the first time, that first howl is said to echo through the wilds till moonset.
Lair of the Hydra

Lair of the Hydra

Land
If you control two or more other lands, this land enters tapped.
{T}: Add {G}.
{X}{G}: Until end of turn, this land becomes an X/X green Hydra creature. It's still a land. X can't be 0.
Llanowar Wastes

Llanowar Wastes

Land
{T}: Add {C}.
{T}: Add {B} or {G}. This land deals 1 damage to you.
"The sylex blast marked not only the end of the war, but the end of Dominaria as most knew it."
—The Antiquities War
Lumbering Falls

Lumbering Falls

Land
This land enters tapped.
{T}: Add {G} or {U}.
{2}{G}{U}: Until end of turn, this land becomes a 3/3 green and blue Elemental creature with hexproof. It's still a land.
Lush Oasis

Lush Oasis

Land - Desert
This land enters tapped.
When this land enters, it deals 1 damage to target opponent.
{T}: Add {G} or {U}.
"Finally, a stroke of luck! Had to taste the water myself to believe it wasn't a mirage."
—Pioneer journal of Big Ralph
Mossfire Valley

Mossfire Valley

Land
{1}, {T}: Add {R}{G}.
Lush growth spreads like a ferocious blaze across the Otarian hillsides.
Myriad Landscape

Myriad Landscape

Land
This land enters tapped.
{T}: Add {C}.
{2}, {T}, Sacrifice this land: Search your library for up to two basic land cards that share a land type, put them onto the battlefield tapped, then shuffle.
Mystic Gate

Mystic Gate

Land
{T}: Add {C}.
{W/U}, {T}: Add {W}{W}, {W}{U}, or {U}{U}.
The gate of every kithkin doun is a cunning trap, intended to spill visitors into an oubliette from which there is no escape.
Mystic Monastery

Mystic Monastery

Land
This land enters tapped.
{T}: Add {U}, {R}, or {W}.
When asked how many paths reach enlightenment, the monk kicked a heap of sand. "Count," he smiled, "and then find more grains."
Opal Palace

Opal Palace

Land
{T}: Add {C}.
{1}, {T}: Add one mana of any color in your commander's color identity. If you spend this mana to cast your commander, it enters with a number of additional +1/+1 counters on it equal to the number of times it's been cast from the command zone this game.
Overflowing Basin

Overflowing Basin

Land
{1}, {T}: Add {G}{U}.
Still to the ignorant eye, yet bursting with life. A million actions and reactions, unstoppable as the dawn.