Crusader Strike, Judgment, Exorcism, Divine Storm and Templar's Verdict critical strikes deal additional 30% damage over 8 seconds.
If the critical requirement portion was removed so it would proc off normal hits as well would bring a great mean of stability to the way how retribution deals damage.
Keeping it up with HoPo Generators and ramping it up with TW would be a nice solution to Retributions issue that TW is really the only ability that does good damage.