Inflict Susceptibility

4th-level necromancy

Casting Time: 1 action

Range: 120 feet

Components: V, S, M (a silver needle)

Duration: Concentration, up to 1 minute

Choose one creature you can see within range. The creature must succeed on a Constitution saving throw, for which any advantage it has is negated. On a failure, the target has disadvantage on all saving throws for the duration. This effect counts as a curse.

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 duration becomes “until dispelled.”

Durations of 8 hours or longer don’t require concentration.