Walpurgisnacht falls each year on April 30th, and if you’ve read Bram Stoker’s classic novel DRACULA you should be familiar with it. Dracula celebrates it, marking the locations of buried treasures revealed by the blue flames they emanate on this night. Also, Jonathan Harker arrives at Castle Dracula on that night. Named for Saint Walpurga, a French abbess who was canonized on the first of May, 870 AD, and whose remains were transferred to Eichstätt on that same day. If the stories are to be believed, she continues to shower people her visit her tomb with her blessing—literally.
“Myroblysia” may refer to the oil used to light the lamps at holy shrines where saints are interred, or the water taken from wells at or near those shrines. It may also refer more directly to “an aromatic liquid with healing properties” that “is said to have flowed, or still flows” from holy relics. Saint Walpurga is one of many saints whose remains are said to release myroblysia. According to Wikipedia, the holy secretion “flows from the stone slab and the surrounding metal plate on which rest the relics of St. Walburga [aka Walpurga] in her church in Eichstätt in Bavaria. The fluid is caught in a silver cup, placed beneath the slab for that purpose.” The oil has been analyzed. It’s only water. But then analysis of consecrated Communion wafers reveal only the basic ingredients of bread. That there is something more involved comes down to a matter of faith.