It would help FFQ decks a lot which is one of the potential problems and one of the reasons we decided to make it only +2/+1 so a firefly spam can still be taken out by RoF. In a way though I worry more about diving creatures which would then be hitting for 10 damage which can be a little much.
For life versus light it could go either way I went light because of Pegasus and the golden dragon has always struck me as kind of airy.
