Morphos

Morphos is one of Necrid's weapons featured in Soulcalibur II

Weapon Gallery
A mysterious stone that changes shape depending on its possessor's will. According to legend, it has the ability to transmute into a variety of objects, from a powerful sword to a priceless jewel. It is for this reason that this stone has been sought by humans. Its hardness makes for an excellent weapon, but its effectiveness as a defense weapon is questionable.

In-game characteristics
In-game, Morphos appears with a bright green substance with a purple energy field. It grants Necrid an increase in overall strength, particularly with singular strikes. However, it's more vulnerable to Guard Breaks.