Soul reaper

hi, i’m just looking for a simple macro\gs that will cast Soul reaper if it’s available and if not, it will cast scourge strike.

i keep to be forgetting to put soul reaper on bosses at 45% health so i figured maybe if i press this “button” instead it will cast soul reaper as soon as it’s available and not scourge strike like i keep doing for some reason

Thank you for all the help =]

/cast [mod:ctrl] Soul Reaper; Scourge Strike

Ensure correct syntax when using. I personally prefer 2 macros 100-45 and 45-0.