This exercise is designed to help you identify the skills which you see yourself bringing to a team - or to highlight those skills you didn't realise you brought.
Dream up an impossible task, for instance, building a ladder to the moon, photographing silence, or time travel. Doesn't matter what the task is, just make it as impossible as possible.
Now, construct a team, five people who you'd want on the crew to make this happen, along with why you've picked each person, and what they offer
Once you've done this - what would you add to the team that no-one else can offer? What special trait do you add?
Finally, which of the other team members are you most like? Which of their special skills do you actually have too?
Reflect upon the skills you've listed, and see if any of these resonate as what value you add to a team