User blog comment:HozzieHozzbourne/Strongest champion outside of the game/@comment-6271162-20130920190414/@comment-3974211-20130926220837

Zilean isn't a time traveler. He's a sorcerer and a seer. He has no ability to go backwards or forwards in time - he is merely able to see the future and prepare for it. He suffers from a disease that causes he conciousness to drift forwards and backwards in his own memories, which is curse as he's forced to relive the death of his people over and over again.