There is substantial evidence of the Influence of all four Religions, all of which have survived to this day and also, all of which contain Magic.
Zoroastrian and Ancient Mesopotamia Religion — which is still called a Religion — has significant ties to Irish Legend — which is called a Legend with the Invasion of Ireland — depicting “Danu” of the Irish and “D’Anu” of Ancient Persia.
The Danube River is named for Danu and even the word “Sinsar” is both “Black” in Irish and “Darkness” in Persia. “Sin” is “Moon” in Old Persia.
The Draugr in Old Norse (Dwarf), is Drug in Old Persian. And travel between the Irish — The Irish gods and The Fir Bolg of Ireland spent much time in Ancient Greece, going as far as sharing the same Names of Gods with them. Tyr in Old Norse, for example.
More on this as we elaborate.