Sulfur Falls

Sulfur Falls enters the battlefield tapped unless you control an Island or a Mountain. {T}: Add {U} or {R} to your mana pool.

Steam Vents

Watery Grave

Dragonskull Summit

Drowned Catacomb

Fiery Cannonade

2R

Wily Goblin

RR

Yawgmoth's Vile Offering

(You may cast a legendary sorcery only if you control a legendary creature or planeswalker.) Put up to one target creature or planeswalker card from a graveyard onto the battlefield under your control. Destroy up to one target creature or planeswalker. Exile Yawgmoth's Vile Offering.

Sailor of Means

When Sailor of Means enters the battlefield, create a colorless Treasure artifact token with "{T}, Sacrifice this artifact: Add one mana of any color."

Shock

Shock deals 2 damage to any target.

Island

({T}: Add {U}.)

Swamp

({T}: Add {B}.)

Mountain

({T}: Add {R}.)