Become Fear (5e Spell)
From D&D Wiki
|Casting time:||1 action|
|Range:||Self (20-foot cube)|
|Duration:||concentration, up to 1 hour|
You replace a creature's perception of you with its greatest fear. The creature in a 20-foot cube originating from you that has the lowest current hit points must succeed on a Wisdom saving throw or become frightened of you for the duration. If multiple creatures fit this criterion, the one with the lowest Wisdom score is affected.
While frightened by this spell, a creature is paralyzed. If the creature ends its turn in a location where it doesn’t have line of sight to you, the creature can make a Wisdom saving throw. On a successful save, the spell ends for that creature.
At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, one additional creature is affected for each slot level above 1st. Additional targets are selected in the same order as when choosing the first, in ascending order of their current hit points.