Simplify this one for me if possible :)?

[Elvenbane-veknilash (Elvenbane)]

You’ll want to combine the harm default from

@Elvenbane-veknilash

Help/Harm Macro

This will cast one spell when mousing over or targeting a friend and another when mousing over or targeting an enemy.

HELP_SPELL as Default

#showtooltip
/cast [mod:alt,@player] [@mouseover,help,nodead] HELP_SPELL; [@mouseover,harm,nodead] [harm] HARM_SPELL; HELP_SPELL

HARM_SPELL as Default

#showtooltip
/cast [mod:alt,@player] HELP_SPELL; [@mouseover,harm,nodead] HARM_SPELL;[@mouseover,help,nodead] [help] HELP_SPELL; HARM_SPELL

With

@Elvenbane-veknilash

Nochanneling Macro

Prevent casting when CHANNELING SPELL is channeling.

#showtooltip
/stopmacro [channeling:CHANNELING SPELL]
/cast SPELL

To get

#showtooltip
/cancelaura Dispersion
/stopmacro [channeling:Void Torrent]
/cast [@mouseover,harm,nodead] Devouring Plague; [@mouseover,help,nodead] [help] Power Word: Life; Devouring Plague