Rubick,The Grand Magus

"Any mage can cast a spell or two, and a few may even study long enough to become a wizard, but only the most talented are allowed to be recognized as a Magus." Yet as with any sorcerer’s circle, a sense of community has never guaranteed competitive courtesy.

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Rubick,the son of a famous mage, Aghanim,is already a well known scholar of the grander world of sorcery,he is also famous for his victories on duels so he is also known as a strong duelist in the world of mages. Rubick is known through the furtherlands,as so people had attempted murder on him but as time pass by Rubick enjoyed getting chased again and again.As so Rubick had never been interested on gaining the "Magus" title until he was in the middle of his seventh assassination attempt. As he casually tossed the death string of the "would-be killers" from a high balcony,it sparked on him how useless,worthless and how utterly unimaginative the attempts in his life had ever been.

Where once the interruption of a spell might have put a cheerful spring in his step, it had all become very predictable.He wanted the title, He craved greater competition, dueling every wizard in the land wasn't enough, he wanted more.A Mage,that's what he wanted. Therefore,taunting his combat mask, he did what any wizard seeking to rise up the ranks would do he announced to the world  "To Kill a Magus",it was his intention all along to show his abilities. 

Rubick quickly discovered that messing with one Magus means messing with them all, and all of them fell upon him in force.Every magus showed up to teach the young mage a lesson,underestimating, only one person against all the greatest magus that the world has ever seen,Each of the mage's spell was an unstoppable torrent of energy, and every attack is calculated to be a one shot killing blow.The world trembled, battlecries soaring as  the mages collide their torrent of energies.Discriminating Rubick was their intention,to shut this kid down,underestimating him,the mages stopped casting their spells to check Rubick's remains.

But very soon something occurred that the mages found unexpected, their spells suddenly appeared out of nowhere heading towards them.Inside the magical chaos, Rubick sat down calmly to soon chuckled
, subtly reading and replicating the powers of each mage in order to cast it against another,creating chaos among those mages who had allied against him. Nobody knew who was casting the spell,it was starting to came in mind that the spell was a friendly fire among the allied mages,accusations of betrayal began to fly, and soon the mages turned one upon another without suspecting who was behind their undoing.

When the battle finally drew to a close, all were singed and frozen, soaked and cut and pierced. More than one lay dead by an ally’s craft. Rubick stood apart, sore but delighted in the week’s festivities. None had the strength to argue when he presented his petition of assumption to the Mage Council, and the Insubstantial Eleven agreed as one to grant him the title of Grand Magus.

https://dota2.gamepedia.com/Rubick/Lore