[{quoted}](name=Nova Force,realm=EUW,application-id=3ErqAdtq,discussion-id=ordE18mw,comment-id=0003,timestamp=2016-01-27T22:09:46.624+0000)
Except that's exactly what it does already. It blocks a considerable amount more than Heal provides, making it a strong reactionary summoner spell. Midlane anti-assassin thingy.
Not really, the response to assassins is basically just Exhaust. I don't think I've seen a pro take Barrier in over a year. It needs to block more damage to be worth it over Heal's utility and use for allies. Objectively, it clearly doesn't stack up well.