Bloody Hands

1st-level necromancy (blood)

Casting Time: 1 action
Range: 30 feet
Components: V, S
Duration: Concentration, up to 1 minute

You cause the hands of the target to bleed profusely. The target must succeed on a Constitution saving throw or take 1 necrotic damage each round and suffer disadvantage on all melee and ranged attack rolls using its hands (or other appropriate body part such as claws or tentacles) for the duration of the spell.

Casting any spell with somatic or material components while under the influence of this spell requires a DC 10 Constitution saving throw; failure means the spell can be attempted again in the next round, rather than lost.