Dendar's Feast

You touch a creature, and it must succeed on a Wisdom saving throw or become cursed for the duration of the spell. This curse taps into the nightmares of the creature and creates an illusory, immobile manifestation of the creatures deepest fears, visibly only to that creature. On a failed save, the target creature becomes frightened of the manifestation, believing it to be real. While frightened, Dendar feeds on the creature's fear, allowing your attacks and spells to deal an extra 1d8 psychic damage to the target. 

A remove curse spell ends this effect. 

At Higher Levels. If you cast this spell using a spell slot of 4th level or higher, the duration is concentration, up to 10 minutes. If you use a spell slot of 5th level or higher, the duration is 8 hours. If you use a spell slot of 7th level or higher, the duration is 24 hours. If you use a 9th level spell slot, the spell lasts until it is dispelled. Using a spell slot of 5th level or higher grants a duration that doesn't require concentration.