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.

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

Fight with Fire

Kicker {5}{R} (You may pay an additional {5}{R} as you cast this spell.) Fight with Fire deals 5 damage to target creature. If this spell was kicked, it deals 10 damage divided as you choose among any number of targets instead. (Those targets can include players and planeswalkers.)

Shivan Fire

Kicker {4} (You may pay an additional {4} as you cast this spell.) Shivan Fire deals 2 damage to target creature. If this spell was kicked, it deals 4 damage to that creature instead.

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.

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}.)