Shadow of Doubt

House Dimir Spell
Level 2
Casting Time: 1 Action
Duration: 1 Minute (Concentration) (?)
Range: 80 ft (?)
Choose a target humanoid in range. They must succeed on an INT Saving Throw or become enchanted for the duration. While enchanted this way, the creature has disadvantage on Intelligence Checks; additionally, you may have that person forget that they have seen a person (or small group of people if they are traveling closely together) of your choice for the spell's duration.