Oil filter wrenches work great to open stuck jars. It's the tool designed to do the exact same task, but on an oil filter. I'm baked and this is blowing my mind,
OIL FILTER WRENCH | Walmart Canada
How to Use an Oil Filter Wrench - Step by Step Guide
File:Oil filter wrench.jpg - Wikimedia Commons
924069 Oil Filter Wrench, Oil Filter Wrench with Handle, For Outside Diameter 3-3/4" to 4-3/8" | Imperial Supplies
PROTO Oil Filter Wrench, Oil Filter Wrench with Handle, For Outside Diameter 3 1/2 in to 3 7/8 in - 1GF37|J3006 - Grainger
GEARWRENCH Oil Filter Wrench, Oil Filter Wrench with Handle, For Outside Diameter 3 1/2 in to 3 3/8 in - 2ZPK2|3082D - Grainger