Sorry about the double post.
Changed Pre-Reqs, added Mechanical wings (If there is an issue we can work on it and change it.) added stipulation that a Construct could take Mechanical Wings.
Edit: Now I kind of want to make a set of Incorporeal Wings. Maybe Energy Wings or something along those lines.
Energy Wings: You gain wings that are made of pure energy. (Their looks are up to you) They operate differently then other wings. In addition to letting you glide, at first level, you may make a single ranged touch attack. With a range of 15 feet, this attack deals 1d4 Force Damage (This damage does NOT scale for larger or smaller Winged creatures.), at second level you may make a Ranged Touch Attack with each wing as a standard action, in addition the Range is now 25 feet + 5 feet per 2 HD. At 3rd level you gain a flight speed equal to your base land speed, your maneuverability is tied to your Charisma, in addition as a standard action you may replicate the Magic Missile Spell, with the difference that you gain one missile per three caster levels, with no maximum amount of Missiles, and each missile also adds your Charisma Modifier to it's damage, if all missiles hit the same target, each subsequent magic missile only adds 0.5 Charisma Modifier instead. (Undead can take this set of wings, but no other sets of wings. Their Maneuverability is still tied to Charisma.)