It must be a typo. I was told 3/3 Conviction would be a buff over what we were losing. I'm not sure that a 9% increased healing stacking buff on a 15 second deactivation timer is worth losing 10% passive healing which is up ALL THE TIME. And if someone made a typo and Walk of the Light is 10%, that's still a small net gain of 4%, and in PvP it will NOT be up all the time.
You are FORCING Holy Paladins to take Conviction. Builds with Pursuit of Justice, Improved Hammer of Justice and Guardian's Favor will be dead. This is not a good change, at all. I saw the mana increases and said, okay, we can deal with that. Then you nerfed our passive healing. You didn't do anything to make our mastery worthwhile. You nerfed EVERYTHING, and made Rebuke a baseline ability like that was some sort of fix.