Polk's going to a better direction there, but sadly this is Balance-Fu grounds.
But hey since we're here, a good idea for Divine Judgment would be giving it global range and make it the counterpart to Earthbound Vengeance.
"For the duration of the Judgment, you cannot use Healing spells and enemies receive a 50% reduction to Mercalan healing. There is a chance equal to (100 - Scaled FAI)% that the judged enemies will be smitten by divine lightning when dealing any form of non-field effect, non-status effect damage, taking (Rank * 5) + (Character Level) - (Their Scaled FAI) magic light damage, which ignores protection."
But hey since we're here, a good idea for Divine Judgment would be giving it global range and make it the counterpart to Earthbound Vengeance.
"For the duration of the Judgment, you cannot use Healing spells and enemies receive a 50% reduction to Mercalan healing. There is a chance equal to (100 - Scaled FAI)% that the judged enemies will be smitten by divine lightning when dealing any form of non-field effect, non-status effect damage, taking (Rank * 5) + (Character Level) - (Their Scaled FAI) magic light damage, which ignores protection."