Well, you can fly fairly well, so for your entrance, I'd say copy the giant... Death from Above. I'll assume you know what they did at the start of the encounter, and that you've seen what's happening, you were sent to catch up and help them.
I'll Assume that you're within range to move in.. You have 135 fly speed, so being 200' up would let you dive down(Using 100'movement to go down) and fly around the guy dervishing for a little if you want. I'll also want a spot check from you, and any applicable knowledge checks.