Improved Shifting (Shifter)

Your fingers may become claw tipped while your Shifting Feature is active. As a bonus action, while unarmed you may do 1d4 slashing damage. You are proficient with these natural weapons, and they have the finesse property. At 5th level their damage becomes magical for the purposes of overcoming resistances. 

Your Shifting feature also now lasts longer (10 minutes per use) and  you can use your shifting feature more often. Up to a number of times equal to your constitution modifier (minimum of 1) between long rests. Doing so while it is active only extends the duration.