You cause the hands (or other appropriate body parts,
such as claws or tentacles) of a creature within range 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
that require the use of its hands for the spell’s duration.
Casting any spell that has somatic or material
components while under the influence of this spell
requires a DC 10 Constitution saving throw. On a failed
save, the spell is not cast but it is not lost; the casting can
be attempted again in the next round.