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.

Chromatic Lantern

Lands you control have "{T}: Add one mana of any color to your mana pool." {T}: Add one mana of any color to your mana pool.

Steam Vents

Fiery Cannonade

2R

Glacial Fortress

Karn's Temporal Sundering

(You may cast a legendary sorcery only if you control a legendary creature or planeswalker.) Target player takes an extra turn after this one. Return up to one target nonland permanent to its owner's hand. Exile Karn's Temporal Sundering.

Mox Amber

{T}: Add one mana of any color among legendary creatures and planeswalkers you control.

Syncopate

Counter target spell unless its controller pays {X}. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

Urza's Ruinous Blast

(You may cast a legendary sorcery only if you control a legendary creature or planeswalker.) Exile all nonland permanents that aren't legendary.

Dovin, Grand Arbiter

+1: Until end of turn, whenever a creature you control deals combat damage to a player, put a loyalty counter on Dovin, Grand Arbiter. −1: Create a 1/1 colorless Thopter artifact creature token with flying. You gain 1 life. −7: Look at the top ten cards of your library. Put three of them into your hand and the rest on the bottom of your library in a random order.

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.

Negate

Counter target noncreature spell.

Shock

Shock deals 2 damage to any target.

Plains

({T}: Add {W}.)

Island

({T}: Add {U}.)

Mountain

({T}: Add {R}.)