Your mentor in the Arcane and Divine
Your mentor in the divine and arcane, Elanna is an Eladrin priestess with powers of the divine. Worshiping Ioun, she always felt most close to Helios, and imparted with him the Orb of Ioun, her personal scrying orb.
She also imparted artifacts to each member of the party, and gave you insight on events to come.
When the Island was attacked, Bahamut personally killed her, naming her Ioun. You attempted to bring her body with you, but upon arriving, she touched the Orb given to Helios, causing it to raise in power. Her body then dissipated.