I like the idea of a jet stream operating on airborne creatures. Very good concept.
Thinking about jetstreams, I immediately thought this card could go either way. If you are going with the jetstream, you speed up, if you are going against it, you slow down.
With that interpretation I thought it would make a good permanent.
Jet Stream: Your airborne creatures gain +1/+0, enemy airborne creatures gain -1/+0
Feel free to ignore my idea...