Magical Sword "Siegel"

This is a short sword used by Onfuan, one of the Five Freedom Fighters. He was once a member of La Riiz' intelligence corps, and they say he started using this blade after he left service. This blade was once apparently the tool of a sorcerer, and now it gives the bearer great power over barrier magic. Magical power courses through the chain attached to the hilt, and when thrown the blade moves like a thing alive to hunt down its target. Once bound by this chain, it's nearly impossible to escape on your own.