Guilds of Ravnica

Cosmotronic Wave | Sorcery | | Cosmotronic Wave deals 1 damage to each creature your opponents control. Creatures your opponents control can't block this turn. | Titus Lunter

Direct Current | Sorcery | | Direct Current deals 2 damage to any target. Jump-start (You may cast this card from your graveyard by discarding a card in addition to paying its other costs. Then exile this card.) | Dan Scott

Gravitic Punch | Sorcery | | Target creature you control deals damage equal to its power to target player. Jump-start (You may cast this card from your graveyard by discarding a card in addition to paying its other costs. Then exile this card.) | Randy Vargas

Maximize Velocity | Sorcery | | Target creature gets +1/+1 and gains haste until end of turn. Jump-start (You may cast this card from your graveyard by discarding a card in addition to paying its other costs. Then exile this card.) | Svetlin Velinov