Sawblades

R is redstone block, I ingot, N nugget. This is a block that is solid on two faces, depending on how you place it. The other 4 faces are non solid, damage mobs in it, and perhaps more importantly, destroy blocks if blocks are pistoned into those sides or vice versa. There would be a delay, however, and liquids would break it. Gold would not have the delay for blocks like dirt, sand, wood, even cobble, but it would still have the delay on other stone blocks, and it wouldn’t be able to mine what a gold pick can’t collect. Copper does more damage than gold to mobs, and can mine whatever a copper pickaxe can collect. It oxidizes over time and eventually stops working if it does that too much, but when waxed, it works even through liquids. Lastly, iron has the most damage and least restrictions, it only can’t mine what iron pick can’t collect, so it’s great all around but don’t have gold’s specialized speed or copper’s liquid resistance. This is a new intended way to break blocks instead of tnt dupers, and a threatening one at that