text: There is no such thing as black magic.  Wiccans don't tend to send out cards to anyone they don't know with '79' scrawled on them in red marker pen.  Occultists are people who study the occult in its myriad forms and probably wouldn't have time to bother sending out cards to random people.  \n\nThe numbers 7 and nine are sometimes considered to be lucky numbers.  Everyone has heard of 'Lucky number 7' and 9 is thought to be a number with positive and powerful connotations for wiccans/witches/pagans/occultists whatever you want to call them because it is 3 X 3.\n\nI have never heard of them being combined to do harm.  Just ignore them.