Accidental Archmagus
?Web serial by ConstanTeen
Orphaned at six and terminal at nineteen, Levi's life on Earth was already ending when a strange voice offered him a different one. He's promised adventure, great powers, and a noble mission. What he gets instead is being stuck in the Void — a place where time has no meaning and magic has no limits. Decades later, now a mage beyond comprehension, Levi breaks his dimensional prison all the way into Ellinaria, only to find his new home is long since saved — both from the Cataclysm, and apparently from himself. Now Levi has simple goals: find his imposter, clear his name stealthily, and resist the urge to solve every minor problem with overwhelming magical violence. It's the Levi Cult's plans for a new Calamity that might complicate things. Then again, who's better to deal with cultists than the man they worship?