Strike It Rich

Create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")
Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Alpine Meadow

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

Lightning Helix

Lightning Helix deals 3 damage to any target and you gain 3 life.

Herald's Horn

As this artifact enters, choose a creature type.
Creature spells you cast of the chosen type cost {1} less to cast.
At the beginning of your upkeep, look at the top card of your library. If it's a creature card of the chosen type, you may reveal it and put it into your hand.

Widespread Thieving

Hideaway 5 (When this enchantment enters, look at the top five cards of your library, exile one face down, then put the rest on the bottom in a random order.)
Whenever you cast a multicolored spell, create a Treasure token. Then you may pay {W}{U}{B}{R}{G}. If you do, you may play the exiled card without paying its mana cost.

Snow-Covered Swamp

Workshop Warchief

Trample
When this creature enters, you gain 3 life.
When this creature dies, create a 4/4 green Rhino Warrior creature token.
Blitz {4}{G}{G} (If you cast this spell for its blitz cost, it gains haste and "When this creature dies, draw a card." Sacrifice it at the beginning of the next end step.)

Flagstones of Trokair

{T}: Add {W}.
When Flagstones of Trokair is put into a graveyard from the battlefield, you may search your library for a Plains card, put it onto the battlefield tapped, then shuffle.

Dauntless Escort

Sacrifice this creature: Creatures you control gain indestructible until end of turn.

Deafening Clarion

Choose one or both —
• Deafening Clarion deals 3 damage to each creature.
• Creatures you control gain lifelink until end of turn.

Snow-Covered Plains

Snow-Covered Mountain

Skirmish Rhino

Trample
When this creature enters, each opponent loses 2 life and you gain 2 life.

Security Rhox

You may pay {R}{G} rather than pay this spell's mana cost. Spend only mana produced by Treasures to cast it this way.

Snowfield Sinkhole

({T}: Add {W} or {B}.)
This land enters tapped.

Siege Rhino

Trample
When this creature enters, each opponent loses 3 life and you gain 3 life.

Highland Forest

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

Rhox Faithmender

Lifelink (Damage dealt by this creature also causes you to gain that much life.)
If you would gain life, you gain twice that much life instead.

Into the North

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

Snow-Covered Forest

Truga Cliffcharger

Trample
When this creature enters, you may discard a card. If you do, search your library for a land or battle card, reveal it, put it into your hand, then shuffle.

Invasion of Ergamon

(As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.)
When this Siege enters, create a Treasure token. Then you may discard a card. If you do, draw a card.

Invasion of Ergamon // Truga Cliffcharger

Arctic Treeline

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

Tome of the Guildpact

Whenever you cast a multicolored spell, draw a card.
{T}: Add one mana of any color.

Shimmerdrift Vale

This land enters tapped.
As this land enters, choose a color.
{T}: Add one mana of the chosen color.

Arcum's Astrolabe

({S} can be paid with one mana from a snow source.)
When this artifact enters, draw a card.
{1}, {T}: Add one mana of any color.