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.

Aether Hub

Chandra, Torch of Defiance

Pia Nalaar

Scrapheap Scrounger

Spirebluff Canal

Whirler Virtuoso

Aethersphere Harvester

Heart of Kiran

Spire of Industry

Walking Ballista

Canyon Slough

Abrade

Jaya's Immolating Inferno

(You may cast a legendary sorcery only if you control a legendary creature or planeswalker.) Jaya's Immolating Inferno deals X damage to each of up to three targets.

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.

Mountain

({T}: Add {R}.)