Description:

The Entity Keeper is a mystical device that allows you to capture and store up to 5 living entities, then release them wherever you choose. To use it, simply right-click while looking at any living creature (except players and bosses) to capture it within a 10-block range - the entity will disappear and be stored inside the item with a magical teleportation sound. When you want to release a stored entity, hold Shift and right-click to spawn the most recently captured creature about 5 blocks in front of you. The item glows with an enchanted effect when it contains stored entities, and its tooltip shows exactly which creatures you've captured and how many slots remain available.