I use blessing of light so that my teammates can leave the bubble and aren't all bunched up. I use it to give myself a shield, then ditch the bubble, get a kill or two with my extra toughness, then quickly run back and repeat. If my teammates do the same, then it's harder for the enemies to get insane multikills and instead have to deal with a bunch of monkeys who are twice as tough. I love to watch the "Support +15" show up on my screen repeatedly, I'm a big team player.