Unseen Assailant

You gain proficiency in the stealth skill if you already have proficiency in stealth you can double it.
You can use your camouflage as an action. The camouflage lasts for an hour or until you take the attack action or cast a spell. While your camouflage is on you gain a +10 bonus on stealth checks. Once you used this feature it can't be used again until you finish a long rest.