Ammit The Soul Eater

Your group enters the ancient temple only to find your way to your goal blocked by a strange otherworldly creature. A bizarre blend of crocodile, lion and hippopotamus and larger than any of the three you face Ammit the Eater of Souls. You are challenged to weigh your intentions against the feather of truth. If you succeed you may pass. However, if you are lying you forfeit your life! A great figure for a puzzle/test/boss challenge!
From Wikipedia:
Ammit (/ˈæmɪt/; Ancient Egyptian: ꜥm-mwt, "devourer of the dead";[1] also rendered Ammut or Ahemait) was a demoness and goddess in ancient Egyptian religion with the forequarters of a lion, the hindquarters of a hippopotamus, and the head of a crocodile—the three largest "man-eating" animals known to ancient Egyptians. A funerary deity, her titles included "Devourer of the Dead", "Eater of Hearts", and "Great of Death".[3] Ammit lived near the scales of justice in Duat, the Egyptian underworld. In the Hall of Two Truths, Anubis weighed the heart of a person against the feather of Ma'at, the goddess of truth, which was depicted as an ostrich feather (the feather was often pictured in Ma'at's headdress). If the heart was judged to be not pure, Ammit would devour it, and the person undergoing judgment was not allowed to continue their voyage towards Osiris and immortality. Once Ammit swallowed the heart, the soul was believed to become restless forever; this was called "to die a second time". Ammit was also sometimes said to stand by a lake of fire. In some traditions, the unworthy hearts were cast into the fiery lake to be destroyed.