Halcyon Stones

Halcyon Stones are unused magic items from Myth: The Fallen Lords that were later used in GURPS Myth. Two fragments of a single stone will give the user great power over wind and weather (all Air and Water elemental  spells, with four levels of Power and Counterspell only vs. the other stone's spells). The only known fragment was lost during Balor's sack of Muirthemne.