Shockwave Enchantment

Shockwave Enchantment: Applicable to Pickaxes, and Axes (and potentially Hammers). 

Every attack/Mine action spreads similar effects to directly adjacent blocks. 

For example, a Pickaxe with Shockwave enchantment can be used to mine a + shape all at once. (five blocks total for the price of one, six if you count the potential block behind the block you're aimed at.)

For Axes, it would effect the tree blocks directly adjacent to and including the mined block.

For Hammers, it would do the same, with the results being that dirt would turn into coarse dirt, cobblestone to gravel, sandstone to sand, diorite/granite/andesite to respective gravel, tree blocks into Mulch/wood pulp and so on and so forth. 

The necessary nerf for this would likely increase the mining time for each tier of material by half, or even double the norm and potentially increase the durability cost for mining.