Divination opens your self to the inner voice, the voice of the Deities and to the Spirit Guides.
Some examples of Divination used by Celts (and others):
- Runes Stones
- Tarot Cards (perhaps a little more Gypsy)
- Ogham Sticks
- Psychometry -Vibrations of Objects
- Forseeing or Scrying
- Watching Animals
- Weather Watching
- Dreams and Visions
These are a few, perhaps very common. Also used by other branches. These are by all means not the only.