Ancient Metal and Shield-Weighting Mechanic

I have an idea for a new Minecraft item that could make combat more strategic and make exploring mountains more rewarding.

Abandoned Mountain Castles

I think Minecraft could add rare abandoned castles in mountain biomes. These structures could contain a special ancient metal that players cannot find through normal mining. Exploring these castles would give players a new reason to visit mountains.

A New Reusable Item

Players could use the ancient metal and a stick to craft a special throwable fantasy item. It would be reusable, but it would lose durability with use.

A New Shield Mechanic

The item's special ability would be its interaction with shields. If it hits a player's shield, it would become stuck in it and make the shield feel heavier. While the item remains embedded, the shield would be slower to raise or use effectively. The player could remove the item and recover it, but the shield would return to normal only after the item was removed.

If the item hits a hostile mob, it could remain embedded until the mob is defeated, allowing the player to recover it.

I think this addition would make combat more interesting without simply adding another weapon that deals more damage. It would introduce a new tactical way to challenge shield users, reward exploration, and give the ancient metal a unique purpose.

I would love to see a feature like this added to Minecraft!