Also known as: カルデアの夢火, Lantern_of_Chaldea
[quote]
A lantern that can light the way to improbable miracles.
It is said that it can exceed even limits set in place by the Throne itself, but only at the observatory that oversees humanity.
[/quote]
An item in Fate/Grand Order used to unlock a servant's Maximum Bond Level (Fate/Grand Order) Capacity to 11 until 15. Similarly to Holy Grail (Fate), players tend to use it for their favorites or for gameplay reasons.