New curse for shields

This will be purely for trolling just like the other curses, it will be called the Curse of Cowardice. It applies to shields and makes it so that when you shield against an attack three times in a row, some damage will start to go thru the shield, going from a small percentage to the actual damage it would normally deal. I'm not exactly sure how they could implement it, maybe they could start adding shields to loot chests or could make a new mob that uses the shield, idk. I just think it'd be funny.