Wendigo

Eeery Presence. Every creature which doesn't know of the Wendigo's presence within 120ft of the Wendigo must Succeed on a DC 15 Constitution saving throw or have halfed move speed and cant see more than 10ft in front of them.

Cumulative Strength. When the wendigo succesfullly lands a hit on a creature, that has flesh, it tears some of its flesh off eating it and regaining 15 tempoary hit points.

Fog of War. The Wendigo has a Fog which provides lightly obscured for all creatures in a 30ft radius.

Fragile Existence. The Wendigo uses extreme amounts of energy, every round the Wendigo takes 10 damage.

Detect Humanoid. The Wendigo knows the location of all humanoids within a 1 mile radius

Mimicry. The Wendigo can make noises or voice appear from anywhere it can see within 120ft which can be deciphered as mimiced on a successful 25 perception check.

Multiattack. The Wendigo can use its Frightful Presence. It then makes three attacks: with its Rend Claw.

Rend Claw. Melee Weapon Attack: +15 to hit, reach 15ft., one target, Hit 16 (2d10+5) When a creature is hit by the Wendigo's Rend Claw attack it must succeed on a DC 15 Constitution saving throw or gain a level of exhaustion.

Frightful Presence. Each creature of the Wendigo's choice that is within 120 feet of the Wendigo and aware of it must succeed on a DC 15 Wisdom saving throw or become frightned for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to the Wendigo's Frightful Presence for the next 2 turns.

Shell Shock. If a creature that the Wendigo can see with 60ft moves the Wendigo forces it to succeed a DC 15 intelligence saving throw or lose all of its movement till its next turn.

The Wendigo can take 2 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. The Wendigo regains spent legendary actions at the start of its turn.

Rend Claw. Melee Weapon Attack: +15 to hit, reach 15ft., one target, Hit 16 (2d10+5) When a creature is hit by the Wendigo's Rend Claw attack it must succeed on a DC 15 Constitution saving throw or gain a level of exhaustion.

Energize. When a creature is unconscious and has 0 health it can use on of its hands to grab the creature and begin to eat it. After each turn of the Wendigo eats the creature and the creature fails a death saving throw. When the creature is out of death saving throws the Wendigo gains 50 temporay hitpoints and permanently gains a hit die 1d4 height and an additional hit die.