@Swoo this might be helpful. Can change the price sections to reflect charges instead and change it to a staff. The staff isn't rechargeable on Broad Swords shards. I would make it 1/1000 chance to get it as loot though, it can be a real game changer, wouldn't want many people having one.
Curious if this was invented to cure rez killing on pvp maps or monster luring on non-pvp maps, or both. I can see more players trying to solo bosses or entering advanced areas alone with this... Might be a good idea to check region or map in script to give it some restrictions. It should also work within 40 tiles on the same map the corpse was created on.