Minecraft: Pyramid Menu

Continuing from my last post, Here we have the menu for the pyramid.

Here is where you choose what you wish to receive and place a diamond, emerald, etc, into the box and press ok. Then, the effects you have chosen will last for as long as you're close to it, so i've heard. However, to choose them you must build a pyramid (Out of those items) to be able to use the effects. The bigger the pyramid, the more effects, but i think for now it caps at 3 layers.

Ok, so you can add a forth layer. However, everytime i tried with emerald blocks, it would crash my world unable to return saying "Internal server error" So, you can place a forth layer, just not sure with emeralds though.