Gift of Oyaminartok

You are have been cursed with lycanthropy, but through the gift of the goliath werebear Oyaminartok. You gain the following features. 

• As an action, you may polymorph into a Large bear-humanoid hybrid or into a Large Polar Bear, or back into your true form, which is humanoid. Your statistics, other than size and AC, are the same in each form. Any equipment you are wearing or carrying isn’t transformed. You can't speak while in animal form. You revert to your true form if you die.
• You have advantage on Wisdom (Perception) checks that rely on smell in all forms.
• You gain resistance from bludgeoning, piercing, and slashing damage from nonmagical attacks that aren't silvered while in bear or hybrid form.
• You gain a Strength score of 19 unless your score is already higher, and a +1 bonus to AC while in bear or hybrid form.
• While in bear or hybrid form, your unarmed strikes are natural weapons that deal 2d8 slashing damage. Attack and damage rolls for the natural weapons are based on Strength. 
• Your speed increases to 40 feet, and you gain a climbing speed of 30 feet while in bear or hybrid form. 
• Your alignment becomes neutral good. 

Icewind Dale: Rime of the Frostmaiden