Silver, new bank building and villager knights

From silver player can make tools, weapons, armor and blocks. Silver weapons and tools will make extra damage to undead mobs like skeleton or zombie. Bank is a huge building where you can find lots of emeralds, iron and other loot. A new mob "Guard"/"Villager knight" will protect the entire village. If player steal something or hurt villager and the knight will see it, he will attack player. The knight will be aggresive to the pillagers.