Superior Shifting

You have a strong connection to the beast within, strengthening your body & your ability to shift. You gain the following benefits:

Choose an ability score affected by your subrace's ability score increase and increase by +1, to a maximum of 20

When you use your shifting ability, the transformation lasts for 10 minutes, until you die, or until you end it with a bonus action

You can use your shifting ability one additional time. You regain all uses when you complete a short or long rest