Efficiency is an enchantment that increases the speed the player mines.
The proper tool for a block must be used in order to receive the speed benefit; the enchantment has no effect if the block is mined with the incorrect tool. See Breaking § Speed for details on mining speed.
The speed increase applies to all blocks that drop an item when mined.
|1.0.0||Beta 1.9 Prerelease 3||Added Efficiency.|
|1.4.6||12w50a||Efficiency has now been nerfed slightly, so that enchanted tools that do not match the block the player is breaking no longer work as quickly as before (e.g., Efficiency V pickaxes no longer instantly break dirt or logs).|
|1.5||?||Efficiency is now useless when using tools on the wrong block types as they now break the block at the same rate as the player's bare fists.|
|Pocket Edition Alpha|
|0.12.1||build 1||Added Efficiency.|
|Legacy Console Edition|
|TU7||CU1||1.0||Patch 1||1.0.1||Added Efficiency.|