The Needlefish Bane, an Atlantean relic of great power.
History
Created by the mystics of ancient Atlantis and kept within the arcane halls in the Silent School for thousands of years. It is an enchanted pole-arm that can kill with a single cut.
Satanis used it to dispatch the traitorous Urcell, attesting its effective lethality.[1] It strengthened his magic for a while until Arthur broke it in half.