Lightning Strike

Lightning Strike deals 3 damage to any target.

Boltwave

Boltwave deals 3 damage to each opponent.

Lava Spike

Lava Spike deals 3 damage to target player or planeswalker.

Emberwilde Augur

Sacrifice Emberwilde Augur: It deals 3 damage to target player or planeswalker. Activate only during your upkeep.

Incendiary Flow

Incendiary Flow deals 3 damage to any target. If a creature dealt damage this way would die this turn, exile it instead.

Roil Eruption

Kicker {5} (You may pay an additional {5} as you cast this spell.)
Roil Eruption deals 3 damage to any target. If this spell was kicked, it deals 5 damage instead.

Take Out the Trash

Take Out the Trash deals 3 damage to target creature or planeswalker. If you control a Raccoon, you may discard a card. If you do, draw a card.

Mountain

Forked Bolt

Forked Bolt deals 2 damage divided as you choose among one or two targets.

Volcanic Hammer

Volcanic Hammer deals 3 damage to any target.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Fateful End

Fateful End deals 3 damage to any target. Scry 1.

Bolt of Keranos

Bolt of Keranos deals 3 damage to any target. Scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Annihilating Fire

Annihilating Fire deals 3 damage to any target. If a creature dealt damage this way would die this turn, exile it instead.