Ender's Crystal Ball (Security cameras)

This crystal ball would be made with 5 crystal, 3 obsidian and an ender eye. This ball by itself would be useless since it would occupy a new block, which would be the obsidian eye. This block would be made with an ender eye, gold on each end and 4 obsidian blocks around it. Once the obsidian eyes are placed, by right clicking on the crystal ball you could "join" this ball to the obsidian eyes, this only if they are within a maximum of 300 blocks away from the crystal ball.
By joining an eye to the crystal ball you can see what the obsidian eye sees (like a security camera) but it would have a violet border on the screen. You could connect a maximum of 25 obsidian eyes to a crystal ball, if you spend more than 5 minutes looking at the obsidian eyes you will begin to see with the vision of an enderman and when you leave the vision of the eyes you will still have this vision but only for 10 more seconds.