After 500 years from the Fall of Mad Moon did the Insubstantial Eleven, with the permission of the Hidden Council, organize an Arcanus Divinum tournament, where all the famous magic practitioners were to compete for the title of Grand Magus. Wizards, conjurers and sorcerers from all around the world swarmed the capital of Sagoniel above which the magnificent Albus Spires floated in the air. The competition was fierce - fire-lances clashed against towering bulwarks of water, wicked beasts from another dimension spilled their life essence for their masters, and powerful words summoned nightmarish visions on the battlefield. Many ancient books and scrolls were consumed in volatile elemetal chaos that ensued on that day and many sorcerers left the field of combat without limbs, eyes or jaws. But there was one practitioner of magic that caught the eye of public the most - this finely built man, his visage hidden under some old wraps, made many a foe to bend their knee in defeat and dishonor before him. He used no written word to invoke devastation upon his adversaries as the flying orbs of fire, air and ice danced above his head, lending their power to this mysterious conjurer. After he defeated every single contestant of this tourney, he approached Rubick, the Grand Magus himself, awaiting his reward. The Magus was reluctant to give up his title to some vagabond trickster... but Invoker denied ever wanting to take the old fool's rule over "pitiful excuses for sorcerers". He wanted something else - old, tattered robes that were hanged on the wall inside the Halls of Ingis Infinitum. The Council laughed at the victor of their tourney, gladly giving him these rags and some gold as his reward. Having received his prize, Invoker vanished into thin air, chilling the very soul of every Magus present. He appeared not far from the capital, adorned in vestments of white and gold that challenged the Sun with their vibrant color. Invoker pitied the foolish Council, for they had given him the robes of mighty Harlek, the Scion of the Sun. Grinning at his enormous fortune, he set foot to the Desert of Misrule determined to master the forbidden knowledge of the Slayers under his newfound proficiency with the element of Exort.

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Credits goes to Thuzar for this fantastic lore.
http://steamcommunity.com/id/thuzar/