Staggering Roar. (Recharge on 5-6) Each creature within 30 feet of the Wendigo has to roll a DC 16 wisdom saving throw. If they fail they will be frightened of the Wendigo.

Multiattack. Wendigo can make two attacks.

Wendigo Curse. A bitten creature has to roll a DC 12 constitution saving throw. If they fail the curse attaches itself to the person. The curse takes two weeks to fully change someone into a Wendigo. The cursed person will be driven to eat humanoid flesh. When passing an easy source of flesh (DM's discretion) will roll a DC 12 wisdom saving throw. Each feasting speeds up the curse by four days. The curse can be stopped by the spell Remove Curse or if the victim doesn't eat flesh for the whole two weeks.  

Mimicry. The Wendigo can mimic any voice of its victims. The Wendigo uses this ability to lure people into their trap. A common tactic is to use the last words for their victims. A creature can try to see threw the Mimicry, with a DC 14 insight check.

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d6 + 1) piercing damage and Hit: 8 (1d6+2) necrotic damage. If the target isn't a construct or an undead, the wendigo gains the hitpoints delt from the necrotic damage 

Claw. Melee weapon attack:  +5 to hit, reach 5ft, one target. Hit: 10 (2d6+2) slashing damage.