Nirvalon
The entity: Unrevealed, but thought to be a location because of the reference under Miscellaneous Use.
The spells: "May Nirvalon Quash All Despair Through Pure White Light" or "May the Mighty Light of Nirvalon..." Creates a light very similar to that of Agamotto objects. This light counteracts despair, releasing victims from spells that effect their emotions.
"Nirvalonic Sphere". Creates a rigid sphere around the user of pure Nirvalonic light. This acts as a Shield-Aura spell of In(40) Material Strength, but does not allow the flexibility of a normal Shield-Aura.
Miscellaneous Use: "From far Niirvalon's bright sea...." Part of an expression that indicates Nirvalon is a land or world, rather than a character.