The Wolf Within

Your shifting ability's duration increases to 1 hour.  Additionally, you gain an alternate use of your shifting ability.  When you use shifting as a bonus action, instead of gaining the normal benefits, you can cast the spell polymorph.  When cast this way, the spell has the following rules and limitations.

• You can only target yourself and only assume the form of a wolf or dire wolf.
• You do not have to maintain concentration on this version of the spell.
• Your equipment does not change shape with you.
• You retain your mental ability scores and access to your class features.
• This version of the spell cannot be counterspelled or dispelled.
• When polymorph ends, shifting ends as well.