This is just a simple test project to find out how minecraft mods could be made. If you want to test this overpowered mod, you have to use forge 1.10.2.
Nothing special. You are able to place one new block the "harvest10"-Block. This block harvest 10 units 3x3 blocks depending on the side you right-click on this block. You can craft this block with four dirt-blocks. In creative mode this block is placed at the building blocks tab.