The Ogham Oracle. $25.00. 26-card deck in an envelope box. Very easy to read and learn. This deck combines ancient Celtic runes with oracle, allowing you to gain wisdom from the druidic alphabet, “Ogham.” Each card shows a rune, the Celtic name, the tree associated, and what the card means. Each card is 5.5 inches in length and 3.5 inches in width, with a silky, matte finish.