well, maybe a wiccan spell done by an incompetent wiccan could inadvertently harm someone.
if i were a lawyer, i would be looking into this as a potentially profitable area of legal practice.
"HARMED BY WICCAN SPELLS?
CALL 1-800-LEGAL!!"
Wiccan spells are like Christian prayers... they don't amount to much other then relieving the mind and soul of it burdens.
The difference is that Christians call Wiccans "Satan worshippers" while Wiccans say "To each his own".