This collar has 3 charges and it magically changes size to fit on the neck of any familiar who attunes to it, even shapes that normally don’t have necks like an octopus. While attuned, the familiar can expend one charge to make its skin magically change color to match its surroundings, gaining advantage on Stealth checks for one hour. It regains 1d3 charges every day at dawn. 

When the familiar disappears due to dropping to 0 HP, is dismissed into its pocket dimension and is summoned back, or is changed into a different form by its master casting Find Familiar again the collar remains on the familiar’s neck. 

Notes: Advantage: Stealth, Familiar, Buff, Warding, Jewelry