Will
A legal document containing personal instructions that are only intended to be followed at the time of the creator's death.

These instructions typically relate to the distribution of the testator's estate, but may also be used to give additional instructions such as designating a guardian of the person for minor children and establishing testamentary trusts.

Although a Will is a legal document at the moment it is properly executed, it is not effective until the testator's death and may be changed at any time beforehand.

See:  Intestate