Urhatta, The Worldwalker

From the publisher's site:

“Urhatta is an ancient and powerful djinn who has transcended mortality in several ways. She exists in several dimensions and timelines simultaneously, pursuing her vast and unknowable plans. She is a paragon of law and truth, although not necessarily goodness. She requires scrupulous accounting of promises, requests and wishes from her devotees. In return, she grants blessings of the mind, access to rare knowledge, and even the ability to transcend time and space.”