Deciding on the new artefact's design was easy after Rino knew what he wanted the artefact to do. If there was a symbol of a peace-loving protector, that had to be a staff.
Many things were associated with the simple wooden staff, but most of all, it was a tool used to support someone else. In old age, the staff was there to help with mobility. The staff was also used as a symbol of fashion and a statement to quell all objections by people of power. It didn't matter if they were a village chief or an earl, the presence of a staff brought with it power.
Speaking of power, it was also a tool used by many magicians to help them channel their mana more accurately and amplify the area of their spells. Staffs were usually designed with the magician specifically in mind, and Rino did not remember any staffs used as a murder weapon.