I keep purge the wicked, Shadowfiend/Mindbender, Halo, and Lights Wrath on separate key binds. You need to be able to control the timing of those to get the most out of them and not have them on a one button macro. It’s a simple and clean macro that has worked wonders for me, Let me know what you guys think 
Sequences['MYmacro'] = { author="Thedemon@Bleeding Hollow", specID=5, version=4, source = "Local", helpTxt = "Talents: 3211131", StepFunction = GSStaticPriority, icon='INV_MISC_QUESTIONMARK', lang="enUS", PreMacro=[[ /targetenemy [noharm][dead] ]], "/cast Schism", "/cast Power Word: Solace", "/cast [nochanneling] Penance", "/cast Smite", PostMacro=[[ /use [combat]13 /use [combat]14 ]], }