Dark Split-Sword

The Dark Split-Sword is a melee weapon with the unique ability to change forms depending on which Stance mod it is equipped with: as a double-ended Heavy Blade when equipped with greatsword stances, or wielded as separate dual blades when using dual sword stances.

Trivia

 * The Dark Split-Sword is the first melee weapon capable of using two different types of Stance mods, in this case Heavy Blade and Dual Sword stances, giving it the ability to use 5 different Stance mods.
 * The is the first weapon from the Tenno lab to require Mutagen Sample.