shield update

This implementation would be one of the most fun that could improve shields by 101% and consists of adding more customization such as having shields of all woods and also being able to add amethyst or crystal to be able to see through it and not only that. I think this is already asking too much but adding enchantments to the shield is necessary because adding only 2 is somewhat boring. Instead, you could add enchantments like one that works like a boomerang or that slows down whoever hits it.