Pickpocket (hostile mob)

'Pickpocket' (fake name, of course) is a hostile mob. It can pass through walls, and quite transparent(not 100%, of course). When it passes through a player, 'pickpocket' steals one or several item(s) in his/her inventory randomly. It does not harm the player physically, but quite annoying.

It is almost impossible to kill 'pickpocket', as they are half-transparent(not that easy to find) and really fast, like a real ghost - but you can kill it using an item called 'bait'. Once the player makes and places it in his/her inventory, it lures 'pickpockets', so they steal baits instead of other items. So he or she can protect his/her items.

Also there's 'Trap bait', which explodes after stolen by 'pickpocket', causing its death. When it's in the player's inventory, it neither explodes nor damages him/her.

 The reason why it is needed? Not that much, just for more thrills(?), I think.

(This is my first time posting a proposal here, so there might be post(s) with similar topics. Also I'm not an English native, so there can be some grammatical errors. Apologies in advance.)