I have a novel/new story coming in June (Phoenix of Ayre). It's a fantasy style story based on a quest for a sacred relic loosely based off the Holy Grail myth.
That relic is called the Fyre Chalice (the spelling is intentional)



(^^The Chalice Well, based on the actual Chalice Well in Glastonbury, England)
In my story, no one actually knows what the Chalice looks like, if it exists at all, and there are numerous speculations/theories on what power it holds like maybe it grants the wielder fire powers/immortality, imbues objects with flames, turns ordinary eggs to Phoenix eggs, lets the wielder potentially destroy the world or heal it. Everyone does agree that it was once held by the ancient Fire God Phoenius (a Phoenix) and used it to create the world according to the Old Faith(fire-worship/magic).
There's been a few expeditions made in search of it, all failed for different reasons. Let's hope the schmucks featured in my story find it before the enemy does or there will be hell to pay XD
(there's another relic or two to explore later, right now this one's the focus of the first book)