Ivy's primary weapon, Valentine is a snake sword with the ability to expand and contract at will. Ivy performed extensive research to find a suitable weapon to aid in her quest to destroy Soul Edge. She based its design on an Asian multi-segmented whip. The first attempts were mechanical whips, based on mechanical principles, but she rejected those ideas and began using black magic to create the perfect weapon. She summoned the hand of Nightmare to give life to "Ivy Blade", but she was ignorant that this power was from Soul Edge, the same power she sought to destroy. After she found out her blood and weapon were also linked with the wicked sword, she changed her weapon's name to "Valentine".