C2375 Great Waves of the Abyss

At that moment, the Heavenly Wrath Sword Mark entwined itself around the Chaos Sword, miraculously transforming the slender blade into a broad greatsword!

This transformation was not due to the Illusive Specter's power of metamorphosis, but rather an intrinsic effect of the Heavenly Wrath Sword Mark, enabling the Chaos Sword to morph into a shape more conducive to combat