Morphic Prism

An intricately designed icosahedron, The faces of
each layer have an Elven script on them.
•Greater Invisibility - (1/Day).
•Advantage on all spell attack rolls and saving
throws against spell for one hour - (1/Day)
•Legend Lore - (1/Day)

"The shifting key unlocks the ancient fire.
The circle binds the darkness and guards the world.
His eye looks out from his prison.
Only when three are one, may it be free."