Prison Realm

This mod adds two items:

-Prison Realm:  
An object that can imprison any mob after right-click. The mob will turn into a block that you may pick up (shift + right-click) or release (right-click). You'll have the mob trapped within this item for as long as you wish.

(crafting recipe: 2 spider eyes, 4 wither skeleton skulls, 1 nether star, and 2 rotten meat)

- Prison Realm V2: 
An object capable of imprisoning a player if they stay within 5 blocks of the Prison Realm V2 for 5 seconds. A single player will get trapped and will stay trapped until either 5 minutes have passed, or the back part of the Prison Realm (another item that is given once a player is trapped) is right-clicked. Once either of these conditions has been met, the player will be released where they were trapped, the Prison Realm V2 will go to the original creator, and the back part will disappear. The block created by trapping a player cannot be picked up. All players will go to the same pocket dimension, but they won't be able to die or get harmed in any way.
(crafting recipe: 4 totems of undying, 1 Prison Realm, 1 potion of Weakness, 1 potion of Poison II, and 1 eye of ender)