I understand what you're saying about the percentages... But the talent Surge of Light says "Your spell criticals have a 50% chance to cause your next Smite or Flash Heal spell to be instant cast, cost no mana but be incapable of a critical hit. This effect lasts 10 seconds."

So... Does it count each Holy Nova as one single event that gets the 50% applied to it OR does it count each person it crits as one event that gets the 50% chance applied to it? You tell me--You've got the toons Obviously I hope it's number two but I'd like to see ze proof.