Burst Lightning

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

Abbot of Keral Keep

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
When Abbot of Keral Keep enters, exile the top card of your library. Until end of turn, you may play that card.

Shock

Lightning Strike

Lightning Strike deals 3 damage to any target.

Llanowar Elves

Incinerate

Incinerate deals 3 damage to any target. A creature dealt damage this way can't be regenerated this turn.

Snow-Covered Mountain

Burning-Tree Emissary

When Burning-Tree Emissary enters, add {R}{G}.

Young Pyromancer

Whenever you cast an instant or sorcery spell, create a 1/1 red Elemental creature token.

Reap the Past

Return X cards at random from your graveyard to your hand. Exile Reap the Past.