Skirmisher's Stealth (5e Class Feature)
From D&D Wiki
Beginning at 2nd level, you combine speed and stealth in combat to make yourself hard to pin down. You are difficult to detect even if you attack or otherwise take actions that would normally reveal your presence. At the start of your turn, pick a creature you are hidden from. You remain hidden from that creature during your turn, regardless of your actions or the actions of other creatures. As a bonus action at the end of your turn, you can make a Dexterity (Stealth) check to hide again if you fulfill the conditions needed to hide. Otherwise, creatures are aware of you at the end of your turn.