Jack, the Ancient Warrior (Swordsman) is a custom champion in League of Legends, they are only be played from other map called the Wild Wakes inside the Kumungu Jungle in Valoran. This is 4 versus 4 type of game mode, where both sides must choose between ancient warriors and same with the summoners rift they must destroy the nexus of both sides. Ancient Warriors are the Monk, the Swordsman, the Mage, and the Archer. They are not accepted in the game mode Summoner’s Rift because they are too much Overpowered to join, so they made their own game mode which it is fitted only to the ancient warrior. But they also use same items from Summoner's Rift but they have their own Ancient weapon to choose first in the shop. Each Ancient Weapon has its own bonuses and effects. But one day, if they are fully accepted, they are ready to dominate the game mode Summoner’s Rift :P
Jack was a king preserved in a throne sitting for a million years, until he was been awaked by the demons that disturbing his ancient castle. He was an immortal after he possess the blade of Gyrdion, the God of Life. Same with the Ancient warriors they have the same goal to defeat the evil God Harlock. Less information was gathered, since the room was not opened in the castle.
- from the great explorer, Ezreal