Ravnica Allegiance

Pestilent Spirit | Creature | Spirit | Menace, deathtouch Instant and sorcery spells you control have deathtouch. (Any amount of damage they deal to a creature is enough to destroy it.) | Anastasia Ovchinnikova

Bedevil | Instant | | Destroy target artifact, creature, or planeswalker. | Seb McKinnon

Judith, the Scourge Diva | Legendary Creature | Human Shaman | Other creatures you control get +1/+0. Whenever a nontoken creature you control dies, Judith, the Scourge Diva deals 1 damage to any target. | Wesley Burt

Theater of Horrors | Enchantment | | At the beginning of your upkeep, exile the top card of your library. During your turn, if an opponent lost life this turn, you may play lands and cast spells from among cards exiled with Theater of Horrors. {3}{R}: Theater of Horrors deals 1 damage to target opponent or planeswalker. | Daarken