The 'Godslayer' was the very weapon that smote down the great king Ahasuerus, the 5th king of the Achaemenid dynasty of Persia.
Ahasuerus was filled with pride and considered himself to be a god, treating his subjects as dirt upon which to tread.
It was eventually Ahasuerus' bodyguard, Artabanus, who took 'Shah Shamshir' or as it is now known the 'Godslayer' sword wielded by the royal guards and killed the god king, ending his reign of vanity!