Wendigo

Soulless gaze. As an action the Wendigo is able to look into the eyes of one humanoid within eye sight, the Wendigo stares into the very soul of the humanoid the humanoid must then make a dc 13 con save, on a failed save it's vision is reduced to 10ft for 30 seconds. (4 turn cool down)

Treacherous screech. As an action the Wendigo lets out a loud and bone rattling screech, everything within 60ft of the Wendigo must make a dc 15 wis save or be frightened for the next three rounds. (6 turn cool down)

Predators strike. As an action the Wendigo may turn itself invisible, well in this form it is trackless and can not be located with simple non-magic means. The Wendigo exits this form as soon as it makes it's next attack action. It will also get advantage on it's first attack when exiting this form.

Multi-attack. When making a claw attack the Wendigo is able to make a second claw attack.

Claw attack. Melee Weapon Attack: +5 to hit, reach 10 ft., 1 target. Hit: 12 (2d8 + 4) [slashing] damage. 

Lunging attack. Melee Weapon Attack: +3 to hit, reach 40 ft., 1 target. Hit: 7 (1d10 + 2) [bludgeoning] damage. (The Wendego lunges at a target, the target must make a dc 14 dex save or be grappled, while grappled the Wendigo has advantage on all bite attacks)

Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., 1 target. Hit: 17 (5d6 + 2) [piercing] damage. 

Fearful glance. As a reaction the Wendigo is able to look at an attacker within view, the attacker must make a dc 12 wisdom save or have disadvantage opposed to their attack. This has a 3 turn cool down.