Even among the barbarians, the practice of divination is not dis-regarded. There are indeed druids in Gaul, for I have met one of them myself, Divitiacus, the Aeuduan, your guest and eulogist. Divitiacus claimed to have knowledge of Nature, which the Greeks call physiologia, and he used to make predictions by means of augury and conjecture. (Cicero)

Palm and tea leaf reading, Tarot cards, astrology, Ogham, and even observing the flight of birds are well established ways of divination.

The Oxford dictionary defines divination as

"The practice of seeking knowledge of the future and the unknown by supernatural means."

Like all such dictionary definitions, the one describing divination is very concise, but what is not part of the definition, yet important to consider, are the divinatory tools mentioned above. The purposes of that magical craft are many:

Each method has its own tools. For scrying, that could be crystal balls, fire and smoke, sky and clouds, the flight of birds, and, way back then, entrails of slaughtered animals to name a few. For the spreads we typical use tarot cards, runes, and of course the topic of this book, Ogam sticks.