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.

Banefire

Banefire deals X damage to target creature or player. If X is 5 or more, Banefire can't be countered by spells or abilities and the damage can't be prevented.

Steam Vents

Goblin Electromancer

Izzet Guildgate

Chart a Course

1U

Fiery Cannonade

2R

Lightning Strike

1R

Blink of an Eye

Kicker {1}{U} (You may pay an additional {1}{U} as you cast this spell.) Return target nonland permanent to its owner's hand. If this spell was kicked, draw a card.

Negate

Counter target noncreature spell.

Shock

Shock deals 2 damage to any target.

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.

Island

({T}: Add {U}.)

Mountain

({T}: Add {R}.)