About Odin's Draw (aka Odin's Rune, or The Single Card Draw)
In runic divination, Odin's rune is both the name of a single rune spread, and a rune in the runic alphabet. Drawing a single rune from the bag of runes is known as drawing Odin's rune.
In tarot, drawing a single card from the deck has no specific name and is simply called a single card reading or a single card draw.
Single tarot card or single rune readings can be useful in providing a concise, succinct answer with immediate focus on the questioner's situation and surroundings. The rune or the tarot card drawn will answer the question by providing a theme with which to guide the questioner. How the questioner chooses to interpret that theme will make the answer clear to them.