For Halloween Xur is selling a secret item.
You need the Jackolyte from the Halloween Package to obtain this item.
Its called the "Flight of the Shadows"
Unfortunately mine is glitched due to the Night Fall orb but i believe it gives you birds flying around your head.
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Translation: "Hey all! I wanted to be a special snowflake and report old redundant information that is old and redundant!" This information has been all over the forums and other Destiny related websites for hours now. Enjoy your Page 1 of Fame!