Boon William - Boon of the Bullet Bender

Having survived ages of war and intrigue, your Allomantic instincts now flow with perfect precision. Once per turn when you make an attack with your Rail Gun or another ranged weapon, you may apply an Allomantic metal effect without spending Metal Charges. If you choose not to apply a metal effect, the attack instead deals additional damage equal to your Sneak Attack damage, this does not count against your once per turn sneak attack. When you deal Sneak Attack damage with a ranged attack, you regain one expended Metal Charge. While you are hidden from a creature, attacks you make against it ignore disadvantage from long range and your Sneak Attack damage dice become d10s instead of d6s.