Your Strength, Dexterity, and Constitution increase by 1.

Wendigo do not have a natural lifespan. Humans can be cursed at any point in their lives, and once cursed they cannot die of old age. They become bigger and more vicious with time, but time will never kill them.

A Wendigo is driven by their hunger and needs, and so they tend towards chaotic alignments.

Wendigos are both taller and thinner than most creatures, standing between 7 and 10 feet tall and averaging 200 pounds. Your size is Large

Your base walking speed is 35 feet, and you also have a climbing speed of 35 feet.

You can speak, read, and write Common and one extra language of your choice.

As a creature of the wild, your claws and fangs have acted as your best weapons to take down your prey. When an enemy enters your melee range, you can choose to attack with your claws against them, causing 1d8 plus your strength modifier slashing damage. You may also bite them, causing 1d10 plus your dexterity modifier piercing damage. Your attacks count as magical for the purpose of overcoming damage resistance.

Your darkvision has a radius of 120 feet, and you can see normally in darkness, both magical and nonmagical.

Fire is your greatest weakness and the only thing capable of killing you. You have vulnerability fire damage, when an attack that deals fire damage hits, the damage done is doubled.

You have disadvantage on attack rolls and perception checks that rely on sight when you, the target of your attack, or whatever you are trying to perceive is in direct sunlight. For every 4 hours you spend in direct sunlight, you take 1d4 fire damage.

All creatures that can see you must succeed on a Wisdom saving throw or become stunned. The stunned target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. The DC of the saving throw is equal to your strength or charisma modifier(your choice) plus your level.

Due to the hard carapace that surrounds your body and your iron will, you have resistance to cold, poison and bludgeoning, piercing, and slashing damage from nonmagical attacks. You are also immune to being frightened or charmed.

Your curse enables you to mimic any sound you've heard in the previous 6 hours, including human speech. You know the minor illusion cantrip

Your senses are finely tuned, able to pick up on the crunch of a leaf hundreds of feet away. You have advantage on Wisdom (Perception) rolls that rely on hearing.

Your hunger for flesh cannot be satisfied, especially not by fruits and vegetables. Any attempt to consume food that is not meat requires a DC 25 constitution saving throw. If failed, you become poisoned. 

You guard your hunting grounds viciously, and you know every inch and creature within them. Arctic, forest, or mountains are your favored terrain. When in your favored terrain, you gain advantage on wisdom, intelligence and dexterity checks, and you gain expertise in skills you are proficient in.

While traveling for an hour or more in your favored terrain, you gain the following benefits:

• Difficult terrain doesn’t slow your group’s travel.
• Your group can’t become lost except by magical means.
• Even when you are engaged in another activity while traveling (such as foraging, navigating, or tracking), you remain alert to danger.
• If you are traveling alone, you can move stealthily at a normal pace.
• When you forage, you find twice as much food as you normally would.
• While tracking other creatures, you also learn their exact number, their sizes, and how long ago they passed through the area.