Staff of Law
The Staff of Law was created by the Twin Powers and given to Goratell during the Exodus into The Vale at the start of the Phyrexian Purge. With it, Goratell was able to seal the Sentinels Gate thus shutting out the Phyrexians forever, or so they thought.
Many decades later, a chaotic neutral thief tried to steal the Staff of Law for Logos Sarx and in so doing caused the Staff to shatter into seven different pieces. It was the Heroes of Crucibal that picked up the pieces and were able to fuse them back together using a lost ritual found in the Laarean Codex.
The Helm of Chaos was created at the same time as the Staff of Law.