Cinderclasm

Kicker {R} (You may pay an additional {R} as you cast this spell.)
Cinderclasm deals 1 damage to each creature. If it was kicked, it deals 2 damage to each creature instead.

Storm's Wrath

Storm's Wrath deals 4 damage to each creature and each planeswalker.

Doublecast

When you next cast an instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy.

Mountain

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Irencrag Feat

Add seven {R}. You can cast only one more spell this turn.

Monastery Swiftspear

Haste
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Crackle with Power

Crackle with Power deals five times X damage to each of up to X targets.