Looter

Add a mob called a looter who is attracted to a bed, can break glass, can open doors(even iron ones), can steal from chests or any items lying around, like coal in a furnace. He also can spot players from very far away, can become invisible and is faster than players(unless you have a swiftness potion). He makes no sound at all and can steal right from the inventory of a person if close enough, and takes the most valuable items first. he has 20 health and spawns rarely. he can place TNT when he has 5 health left, or to destroy a base(anywhere with a table, chest or a bed. you kill him you can get all the items he has looted, 1 random item, suspicious stew, potion of invisibility, potion of swiftness and TNT. He is immune to wood and stone tools. You can find them in the day in an underground looting base with lots of cool stuff and traps. they only come at night and never leave a base he is looting until he is done looting everything, or he has 10 health. they something gang up and something loot each other...