Is there a legal phrase that is similar to "power of attorney" that, when translated literally, includes the word "hand"? As in, the authority to sign on someone's behalf, manage their estate, etc. etc.
I was almost certain there was such a phrase but I can't find it. The reason I ask is because I intended for the person who has the authority to sign for someone else to actually be possession of that person's dismembered hand - haha, but the pun only work if the phrase has the word "hand" in it.