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

Glimmer of Genius

Harnessed Lightning

Spirebluff Canal

Torrential Gearhulk

Whirler Virtuoso

Glint-Sleeve Siphoner

Glorybringer

Canyon Slough

Fetid Pools

Magma Spray

Abrade

The Scarab God

Vraska's Contempt

2BB

Dragonskull Summit

Sorcerous Spyglass

As Sorcerous Spyglass enters the battlefield, look at an opponent's hand, then choose any card name. Activated abilities of sources with the chosen name can't be activated unless they're mana abilities.

Swamp

({T}: Add {B}.)

Mountain

({T}: Add {R}.)