Efficiency

Efficiency is an enchantment that increases the speed the player mines. See Breaking for details.

One must use the proper tool for a block in order to receive the speed. It does not matter if the player mines it with the incorrect tier.

The speed increase applies to all blocks that when mined, will drop an item.

Efficiency when applied to axes will increase the chance that the axe may stun a shield, with the base chance being 25% and a 5% increase for each level of efficiency.

Efficiency V is only available using an anvil for diamond and stone tools. Wooden, golden and iron tools can get Efficiency V by enchanting.