The term 'Spirit of Myth' can be broken down into two crossword solutions: GENIE (5 letters) and KER (3 letters). GENIE is a mythical creature from Arabian folklore, typically depicted as a powerful, magical being that grants wishes to those who summon it. KER is an ancient Greek spirit of the dead, often associated with the underworld and the afterlife. Together, these two words represent the idea of a powerful, supernatural force that has been part of mythology for centuries.