ELIS | Temple of Hades
Riddle Name: Centaur Field
"Look for a stone centaur in the middle of a pond in the Plains of Flax. Walk in the direction it faces until another centaur points you in a new direction. Though it will be difficult as the fog gets thicker, fear not, for I will be safe inside a cave of treasures waiting for you to find me."
The Ainigmata Ostraka can be picked up upstairs of Temple of Hades