This spell binds the life force to a creature's severed hand, animating it. The hand must have been severed from the body of a M or S humanoid within the last 7 days. The humanoid must be dead at the time of the hand's animation. If the humanoid's spirit already manifests as another undead creature, the spell fails.
The hand becomes a crawling claw (see MM). The hand is under your control for 3 hrs, after which the hand becomes inactive and can't be animated again. On each of your turns, you can use a bonus action to mentally command the claw. If you issue no commands, the claw follows its last command to the best of its ability. Once given an order, the claw continues to follow it until its task is complete.
When you cast this spell using a spell slot of 1st level or higher, the crawling claw remains active for an additional 3 hours for every slot level above 1st. When cast using a spell slot of 8th level, the crawling claw remains active until slain.
Material Component:
a severed hand and a pinch of grave dust
Verbal Component:
Excito Mors Manus