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.

Disdainful Stroke

Counter target spell with converted mana cost 4 or greater.

Sacred Foundry

Steam Vents

Glacial Fortress

Lightning Strike

1R

Star of Extinction

5RR

Clifftop Retreat

Clifftop Retreat enters the battlefield tapped unless you control a Mountain or a Plains. {T}: Add {R} or {W}.

Negate

Counter target noncreature spell.

Opt

Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.) Draw a card.

Essence Scatter

Counter target creature spell.

Island

({T}: Add {U}.)

Mountain

({T}: Add {R}.)