Frostmourne - Warcraft

The sword of the Lich King, Arthas, from Warcraft. Even for those who don't play (myself included, ironically), this is a testament to your 3D Printing skill and endurance.

https://www.myminifactory.com/object/frostmourne-from-warcraft-4156 is the original, but it needed some fixing up for printing. Details in the "How I Designed This" section.