Under the constant accumulation of Mithras' secret juice, a king-class mutation dormant in Cassandra's bloodline activated, enabling her to evolve into a Heart Enchantress: an almost extinct breed of sex demonesses made famous for their habit of seducing innocent men at night.
The Spiritual World's equivalent of succubi, basically. But they were a lot more passionate and devoted to their partners, often obsessing over their lover, and keeping them close at all times. In half the cases, however, the Heart Enchantress eventually got bored with her partner, draining them to death before moving on to the next prey.
But the moment Cassandra unlocked the textbook horns and butterfly wings of Heart Enchantresses, Elektra's eyes stretched to the limits,