The written rules:

-The human whose name is written in this note shall die.
-This note will not take effect unless the writer has the subject's face in their mind when writing his/her name. Therefore, people sharing the same name will not be affected.
-If the cause of death is written within 40 seconds of writing the subject's name, it will happen.
-If the cause of death is not specified, the subject will simply die of a heart attack.
-After writing the cause of death, the details of the death should be written in the next 6 minutes and 40 seconds (400 seconds).