This is another riddle, I thought it might be fire, but some things don't fit.
My first is in dare but never in fear,
My second's in dark and also in clear,
My third a shadow as well as in cave,
My fourth is in gold and also in grave,
My fifth is in cold as well as in hot,
My sixth is in sun but not in spot,
My whole enjoys a fiery feast,
Look and discover a mythical beast.
What is the answer?
EDIT:
And I have been asked other riddles with the same structure... What does the "my first", "my second", "my third"... refer to? Does it mean something like "my first clue"?