Lava Coil

Lava Coil deals 4 damage to target creature. If that creature would die this turn, exile it instead.

Living Lightning

When Living Lightning dies, return target instant or sorcery card from your graveyard to your hand.

When Ardent Elementalist enters, return target instant or sorcery card from your graveyard to your hand.

Lightning Bolt deals 3 damage to any target.

As long as Kaervek's Torch is on the stack, spells that target it cost {2} more to cast.
Kaervek's Torch deals X damage to any target.

Rolling Thunder deals X damage divided as you choose among any number of targets.

End the Festivities deals 1 damage to each opponent and each creature and planeswalker they control.

Needle Drop deals 1 damage to any target that was dealt damage this turn.
Draw a card.

Fiery Cannonade deals 2 damage to each non-Pirate creature.

Frost Bite deals 2 damage to target creature or planeswalker. If you control three or more snow permanents, it deals 3 damage instead.

Defender
{T}: Thermo-Alchemist deals 1 damage to each opponent.
Whenever you cast an instant or sorcery spell, untap Thermo-Alchemist.