Glass Jaw

This version sets up the structure for adding additional Countermeasures later, and adds a new broad-spectrum countermeasure called "attackfixer" which allows for much more natural-feeling direct damage, such as dying while sporting a full draconic shield and no entropy loss.

By request, a creative-only Glass Dagger was also added. This item doesn't add any attack damage whatsoever to your fists, but when rightclicked, deals a quarter of a heart of damage to yourself. This damage is the same kind of isAbsolute / isUnblockable damage that Glass Jaw protects, so it should help you quickly find out if the countermeasures are working for you.