Insomniac

You have mastered the art of functioning optimally with minimal rest, a skill developed through your adventures or innate resilience. Your unique physiological or magical adaptation grants you the following benefits:

1. Reduced Rest Requirement: You only need to sleep for 2 hours to gain the benefits of a long rest.

2. Mental Fortitude: Your reduced need for sleep strengthens your mental defenses. You gain advantage on saving throws against spells and effects that induce sleep or manipulate dreams.

3. Enhanced Vigilance: During the hours you are awake while others rest, your heightened awareness sharpens your senses. You gain a +2 bonus to Perception checks and cannot be surprised while you are awake and not incapacitated.

4. Limited Immunity to Exhaustion: You suffer one less level of exhaustion than you normally would from a lack of rest. This does not protect you from other sources of exhaustion.

Note: This feat is especially useful for characters who need to keep watch, engage in extended activities, or those who want to reduce their vulnerability during rest periods. It does not, however, reduce the need for food, water, or other forms of sustenance.

(As with all homebrew content, DM discretion is advised for balancing and integration into gameplay.)