Ok i would like to in 1 macro

1 cast divine plea (out of combat only)
2 cast Sacred shield ( out of combat only)
3 cast Avengers shield

so i would hit the button 3 times to pull the mobs with AS ( first activating the first 2 spells) at first but while in combat and 30 sec later (cool down) it would only cast AS since i am in combat.

thanks for the help