Basic Help/Harm Macro
This will cast one spell when mousing over or targeting a friend and another when mousing over or targeting an enemy.
#showtooltip
/cast [mod:alt,@player] [@mouseover,help,nodead] HELP_SPELL; [@mouseover,harm,nodead] [harm] HARM_SPELL; HELP_SPELL
Variant: HARM_SPELL as Default
#showtooltip
/cast [mod:alt,@player] HELP_SPELL; [@mouseover,harm,nodead] HARM_SPELL;[@mouseover,help,nodead] [help] HELP_SPELL; HARM_SPELL