Inspired by Impling Saver, Casket Saver will switch the right click "open" option on caskets of all tiers to "use" if a Master Clue has been found in your inventory or bank.
Would you consider adding some kind of indicator to the plugin to let the user know that they can't open a casket due to the plugin? Perhaps one of the following indications would suffice:
As a chat message when the user tries to use the chest while the save feature is active
Whenever a casket is added to your inventory
I'm not sure if withdrawing more than one at a time will cause the event to fire multiple times
Would you consider adding some kind of indicator to the plugin to let the user know that they can't open a casket due to the plugin? Perhaps one of the following indications would suffice: