Regal Unicorn

Fugitive Wizard

Jwari Scuttler

Devoted Hero

Plains

Water Elemental

Hallowed Fountain

({T}: Add {W} or {U}.)
As Hallowed Fountain enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Coastal Tower

Coastal Tower enters the battlefield tapped.
{T}: Add {W} or {U}.

River Kaijin

Armored Cancrix

Boreal Shelf

Boreal Shelf enters the battlefield tapped.
{T}: Add {W} or {U}.

Valiant Guard

Glory Seeker

Maritime Guard

Wu Infantry

Shu Foot Soldiers

Coral Merfolk

Thraben Purebloods

Giant Octopus

Glacial Fortress

Glacial Fortress enters the battlefield tapped unless you control a Plains or an Island.
{T}: Add {W} or {U}.

Kasimir the Lone Wolf

Keepers of the Faith

Loxodon Convert

Jhessian Lookout

Traveling Philosopher

Great Hart

Blade of the Sixth Pride

Siege Mastodon

Femeref Scouts

Sanctuary Cat

Squire

Silvercoat Lion

Fortress Crab

Azorius Chancery

Azorius Chancery enters the battlefield tapped.
When Azorius Chancery enters the battlefield, return a land you control to its owner's hand.
{T}: Add {W}{U}.

Fresh Volunteers

Horned Turtle

Volunteer Militia

Tundra

Seachrome Coast

Seachrome Coast enters the battlefield tapped unless you control two or fewer other lands.
{T}: Add {W} or {U}.

Silent Artisan

Shu Elite Infantry

Azorius Guildgate

Azorius Guildgate enters the battlefield tapped.
{T}: Add {W} or {U}.

Border Guard

Armored Warhorse

Pearled Unicorn

Merfolk of the Pearl Trident

Trokin High Guard

Wandering Ones

Island

Eager Cadet

Alaborn Trooper

Kraken Hatchling

Vizzerdrix

Adarkar Wastes

{T}: Add {C}.
{T}: Add {W} or {U}. Adarkar Wastes deals 1 damage to you.

Oreskos Swiftclaw

Wanderwine Hub

As Wanderwine Hub enters the battlefield, you may reveal a Merfolk card from your hand. If you don't, Wanderwine Hub enters the battlefield tapped.
{T}: Add {W} or {U}.

Sejiri Refuge

Sejiri Refuge enters the battlefield tapped.
When Sejiri Refuge enters the battlefield, you gain 1 life.
{T}: Add {W} or {U}.

Loxodon Wayfarer

Pillarfield Ox

Jedit Ojanen

Coral Eel

Lumengrid Warden

Yoked Ox

Elite Vanguard

Amphin Cutthroat

Indomitable Ancients

Knight Errant

Straw Soldiers

Temple of Enlightenment

Temple of Enlightenment enters the battlefield tapped.
When Temple of Enlightenment enters the battlefield, scry 1.
{T}: Add {W} or {U}.