The creature from Greek mythology known for its power of prophecy is the Sphinx. The Sphinx, often depicted as a creature with the body of a lion and the head of a human, posed riddles to travelers. Those who could not answer her riddles faced dire consequences. The most famous riddle, "What walks on four legs in the morning, two legs at noon, and three legs in the evening?" represents life stages. The Sphinx symbolizes wisdom and mystery, playing a crucial role in various Greek legends and tales.