Shield Health: A way to balance axes

In the combat of Minecraft, to deal with shield users, you almost always need to have an axe. Sure, axes can have the role as shield-busters, but it's not fine with how difficult it is otherwise to deal with shields. This is where shield health comes in, to allow other weapons to deal with shields.

Shields would have 20 health, and damage taken by shields is reduced by 4 per hit. Shields regenerate health rapidly when not blocking. If a shield runs out of health, it gets disabled and regenerates slower.

The purpose of this is to make other weapons able to deal with shields compared to axes. Axes will still be better against shields due to their higher damage per hit and unique ability against shields.