This Radius Garden 22611 Root Slayer Edger has an ergonomic handle and "inverted V" blade with root-cutting ripsaw teeth slice that through sod and roots with exceptional ease.
Check if this is available and reserve it online through the Minerva catalog
CML Library of Things
https://curtislibrarylibraryofthings.myturn.com/library/
https://curtislibrarylibraryofthings.myturn.com/library/