Wendigo Horror

Bloodied: When the Wendigo's hit points are reduced to half or less, it becomes "Bloodied". His Strength increases by (4) turning to a (22). it gains use of its Legendary Actions and it regains it Legendary Resistance, if it had already used it.

Legendary Resistance (1/day): If the Wendigo fails a saving throw, it can choose to succeed instead.

Natural Hunter: The Wendigo has advantage on Stealth checks made when its hunting.

Multiattack. The Wendigo makes one claw and one bite attack

Claw Attack: +7 to hit (+9  when bloodied) reach 10ft., one target. Hit: 10 (1d12 + 4); 15 (1d12+6) when bloodied [Slashing] damage. 

Bite Attack: +7  to hit (+9 when bloodied) reach 5ft.,  one target. Hit: 13 (2d8 + 4); 15 (2d8+6) when bloodied [Piercing] damage. If a target is bitten, it makes a Constitution saving throw (DC 15) or it takes an extra 3d6 (10) necrotic damage, or half as much if it succeeds the save.

Opportunity Attack. The Wendigo can make one claw attack, if a creature passes through its attack range.

The Wendigo can take 3 legendary actions, choosing from the options below. Only one legendary action can be taken at a time, and only at the end of another creatures turn. The Wendigo regains spent legendary actions at the start of its turn.

Move: The Wendigo moves up to its speed without provoking an opportunity attack.

Bite (costs two points) The Wendigo makes a bite attack.

Shriek (costs three points) The Wendigo screams. Each creature within 30ft of the Wendigo that can hear it must make a Wisdom saving throw (DC 15) or become stunned for one minute. An effected creature can make a saving throw at the end of their turn to end the effect.