Starspawn

 
Prerequisite(s): Aberration Blood, one other aberrant feat
 
Benefit: You grow membranous wings and gain a fly speed of 1/2 your base move with average maneuverability. You can use your flight for a number of consecutive rounds equal to 1 + your Con modifier, between these uses, you cannot fly for one round. You also gain resistance to Cold 5. You are immune to altitude fatigue and altitude sickness.
 
Source: Lords of Madness