Daemonfey Stealth (4e Feat)
From D&D Wiki
Daemonfey Stealth [Racial Feat]
Due to your races tendency to avoid the public you are especially adept at stealth.
Prerequisite: Dex 13, Daemonfey, Assassin
Benefit: If you have any cover or concealment when you roll initiative you can roll a stealth check to hide as a free action. Also you may roll a stealth check to hide as a free action if you become invisible.