Sunlight Sensitivity - Has disadvantage on attack rolls and on Wisdom (Perception) checks that rely on sight when it, the target of it's attack, or whatever it is trying to perceive is in direct sunlight.

Human Guise - Adiwraiths can shift into an approximation of what they think a human looks like, in this form the Adiwraith will always have opaque white skin and seem to have slightly too long limbs and stretched out mouths, It also has snake like eyes and eyelids.

Alert - The Adiwraith is aware at all times and can take 2 attacks for its action and an additional attack for its bonus action.

Claw Attack Melee Attack: +6 to hit, reach 10 ft., 1 targets. Hit:17 (3d8 + 5) Slashing damage. 

Bite Attack. Melee Attack: +6 to hit, reach 10 ft., 1 target. Hit: 17 (3d8 + 5) Piercing damage. 

Multi Attack. Melee Attack: +6 to hit, reach 10 ft., 2 targets. Hit: 25 (3d10 + 10) Slashing damage. 

Poison Strike. Melee Attack: +6 to hit, reach 10 ft., 1-2 targets. Hit: 22 (3d8 + 10) Poison damage. 

Choke. Melee Attack: +6 to hit, reach 10 ft., 1 targets. Hit: 25 (3d10 + 10) bludgeoning damage. The target has to make a strength check or be grappled.

Unnatural reflex - The Adiwraith can take an extra attack as a bonus action.

Disengage - The Adiwraiths movement doesn't provoke opportunity attacks for the rest of the turn.

Quick Attack - When the Adiwraith gets an opportunity attack, it can choose to make 2 claw attacks. It can only use this trait once until its next turn.

Evasion - Once per round when it is subjected to an effect that allows it to make a Dexterity saving throw to take only half damage, it instead takes no damage if it succeed on the saving throw, and only half damage if it fails.