/cast Hand of Reckoning
/cast Judgment of Wisdom

you can use light or justice.
On my 70 ret pally im critting for 1700 with hand of reckoning and it being OFF GCD you can get both the judgment and hand of reckoning down at the same time.
I can easily take a mob down in that macro + divine storm if all of them crit.


Just remember to turn it off in instance runs or the tank and healer will murder you :P