You can make a Will roll to summon or dismiss your wings. If you fail this roll, you cannot try again for 10 minutes. Your flight Move is Basic Speed x2 (drop all fractions). As explained in Move in Other Environments (p. 18), you can adjust this by ±2 points per ±1 yard/second. You cannot hover or turn too sharply. Use the Acrobaticsskill for rolls to determine agility in the air, and the better of Hiking or HT to determine endurance for long-distance flight. While your wings are out, they are cumbersome and noticeable and might have effects on reactions, stealth, etc.