Unless your DM is taking it easy on you, there are plenty of situations where this Aspect will come in handy. Getting away from melee enemies and eating opportunity attacks for doing so is the most basic example.
I think what I'm getting at is that the wording didn't take powers that target multiple creatures into account. It's not worded clearly, leading to this confusion.
My druid player was very pleased to find a Feyswarm staff during our last adventure, but I feel like her excitement may be a bit premature, specifically as relates to the Daily power:
Power (Daily): Free Action. Use this power when an attack made with this implement hits. Magical stinging...