Strongest Mage ever?

A a Mage main i have always wondered who the most powerful mage in the entirety of Warcraft lore is. And by mage i mean basically any creature/entity that utilizes the classic mage kind of spells and powers like fire, frost and arcane. (Unless there are other forms of mages that utilize different powers, I don't know too much about the lore so feel free to tell me :D)

edit: i know this question has been asked in the past but quite some time has passed since that, i'm curious if anything changed