"The reason there's an an ancient dragon smithing stone in Mogh's palace is because it was given to Morgott by Godfrey as a parting gift when he left the lands between"

 

"(Godfrey visited the twins at least once or twice before, explaining to them the golden order, thus explaining why he and Morgott had a close relationship even though Morgott was locked in the sewers, and why Mogh rejected it, believing that if his own mother and father would abandon him for their sense of 'Order' then disorder was the only way forward)"

 

"But tells him to not tell Mogh where he got it from, since he knew Mogh hated his father for allowing Marika to hide them away. Mogh later tries to confide with his brother about his feelings, the one person he had been with his entire life, had experienced the same mistreatment as him. But even he found his own omen form disgusting. Even going as far as to say that they were in the right to imprison them" 

"As they say there goodbyes, Morgott show's him the jagged stone, saying that it was the reason they were able to escape.(This is because the only thing hard enough to break chains made to hold a demi-god was a stone of capable of imbuing god-killing properties to weapons,) The stone is now sat at the near apex of his palace, surrounded by albinaurics and a single pureblood knight, explaining to his flock the importance of the holy relic before them, and how it is the only reason why their Lord Mogh now stand before them"

My Mogh and Morgott Theory/Head-canon Art by Eliza Kormendi