I know that giving a creature flying has meaning in the context of Airhood, but this card isn't going to behave the way player's expect it to on defense. A lot of new players will think that the first ability somehow lets it block creatures with flying, when it actually doesn't give the creature flying until its too late to block. May I suggest removing the first ability and changing the second ability to, "1W: ~ gets +0/+2 and gains flying until end of turn."

Heh. Otherwise, this creature could end up with some really odd wording. "If an attacking creature could be blocked by Skywatcher, if Skywatcher was flying, Skywatcher gains flying, but only if it therefore blocks that attacking creature. If, for some reason, Skywatcher is incapable of blocking that creature because of some change to the game state that happened due to Skywatcher gaining flying, Skywatcher loses flying."

Yeah, talk about commons confusing newer players. This was obviously just getting some value out of flying creatures but I can't stress enough the flaw in airhood:

With metalcraft, if you have a creature that turns into an artifact temporarily, it's good. With airhood, you really don't need a creature that will turn you off except after it attacks or blocks.