Pestilent Spirit

• WOTC Official Reminder Textofficial rules
  Menace — This creature can't be blocked except by two or more creatures.
• WOTC Official Reminder Textofficial rules
  Deathtouch — Any amount of damage this deals to a creature is enough to destroy it.

• WWizards of the Coast2019-01-25
  Official Ruling
  An instant or sorcery spell must actually deal damage to a creature for it to be destroyed. Simply targeting a creature isn’t enough. If the spell instructs another object to deal damage, the spell doesn’t deal any damage itself and its instance of deathtouch doesn’t apply. Dealing 0 damage isn’t dealing damage.

Rulings via Scryfall