Queen's Venom

A massive, poisonous sword made of wyvern parts

Greatsword

Dreadqueen Rathian scales surround the steel edge and coat it in a very potent toxin that eats away at flesh. For whatever reason, however, Guinevere is immune to its effects.

Green wyvern scales and wyvern bones, meant to be lightweight despite the massive size. Wrapped in bandages soaked in a potent poison. Leather-wrapped handle, solid iron handguard.

~175 lbs

The sword is literally the Sieglinde Rose from Monster Hunter Generations. Heavy, purple and green, wrapped in stained bandages, and shaped like a giant Bowie knife, except the bottom edge is convex.

Guinevere's favorite weapon, kept to a constant sharpness and stored in oilcloth. The scales and bone envelope a hardened steel edge, making it much lighter that if it was made of solid steel. The poison itself comes from glands found in wyvern claws (though technically it's venom. Does the sword bite you, or do you bite the sword?).