Xitharis

Xitharis is a stone that is a piece of Lorien's first moon.

It allows the Garde to transfer a Legacy to another for a short period of time. It appears to last around an hour; the exact time seems to depend on the Legacy being transferred.

The only known Xitharis stone was lost by Five in "The Fall of Five". It was seen when Six transferred her invisibility legacy to Four and Sam Goode so they could retrieve his Chest in the Mogadorian Cave.