Animate crawling claw

This spell binds the life force of a murderer to its severed hand, haunting and animating it. Choose a severed hand you can see within range. The hand must have been severed from the body of a humanoid murderer within the last seven days. If the murderer is dead and its spirit already manifests as another undead creature, or if its dead spirit has long passed on to another plane, the spell fails.

The target hand becomes a crawling claw, the statistics of which can be found in the Monster Manual. It is under your control permanently. On each of your turns, you can use a bonus action to mentally command the crawling claw. You decide what action the creature will take and where it will move during its next turn, or you can issue a general command for it to follow to the best of its understanding. 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. You may only have three crawling claws at a time.