Air Assassination

You've learned the secret behind the silent air assassinations displayed by the assassins before you, gaining the following benefits:

You can safely leap off a ledge of any height under 40 feet onto the ground without incurring any falling damage.

If you attempt to land on top of a creature, you can use your reaction to make a melee weapon attack with your Hidden Blade, dealing Xd4 + piercing damage. X equaling how many feet you've fallen, divided by 5. E.g. falling 25 feet means you deal 5d4 piercing damage to the target.

This effect stacks with sneak attack damage. You recieve half of the total falling damage if you fell farther than 40 feet.