Shadowmourne is one of the few legendary items players can acquire in World of Warcraft, and a weapon like that needs its proper real-life version. Kamuicosplay's Svetlana Quindt made one. Her replica even has flashing lights inside and it looks just as awesome as the weapon in the game.
Forging it was a really big deal back in Wrath of the Lich King, but crafting something like this might took even more time and patience.
Check out Kamuicosplay on Instagram for more:
The in-game version of Shadowmourne, for comparison.