Download Minecraft NotEnoughScaffold:-

Not enough scaffold adds a new type of scaffold in minecraft it is a small mod yet very nice mod to add small detail. it also a new enchantement that you can disable in config. the enchantement is for your shovel or pickaxe with it you will be able to dig 3x3 Blocks at once you can normally mine one block by just pressing shift. and if you don't want this enchantement disable it in config.

download Mod for 1.12.2:-