MultiCube - New Ender material (boss drop)

The MultiCube drops from the Multimaster ender boss (idea post link in comments) and can be used to "duplicate" items. But how?

By using a special type of crafting bench, you can use an item inside and it will show you its crafting recipe underneath, by using MuliCubes you can replace some of the crafting materials with MultiCubes and get them to your hand, without changing anything on the inspected item. 

Note: the replacement is per crafting recipe and not per item so you can use it on the beacon's nether star only once.

for example: using a diamond pickaxe will show you 3 diamonds and 2 sticks, by using a MultiCube you can replace a diamond with it and the pickaxe will remain the same. Now every time you will inspect any diamond pickaxe on this table it will show 2 diamonds, 2 sticks and 1 MultiCube.