A small little buff to the Cold Iron Vanquisher, the description states "A powerful cold iron blade forged for the singular purpose of hunting down and destroying the undead."
And the Cold Iron Vanquisher is currently outclassed by both Leviathan Blade and Acheron. So why not give the Cold Iron Vanquisher the ability to kill off the Undead completely even if they're under the effects of a Grim Totem? This gives more incentive to craft and use it instead of more powerful Elemental Weapons.
A good concept, but what about Bombies?