The term 'DECK MYSTICAL' refers to a type of card deck used for divination. The crossword solutions for this term are TAROT (5 letters), RUNE (4 letters), and RUNES (5 letters). Tarot is a type of card deck originating in the 15th century, consisting of 78 cards divided into two parts: the Major Arcana and the Minor Arcana. RUNE is an ancient form of divination that uses symbols carved into stones or other objects. Runes are an alphabet of symbols used in divination, originating in Northern Europe.