Command Block

The Adventure Mode Control Block (name might not be final ) is a block that will be added in a future update. It is being made with the intent to support Adventure mode and will allow mapmakers to expand the interaction with the player through server commands. The block can run specified server commands when activated by redstone current. Considering its functionality, they will not be able to be crafted and only administrators will be able to place them.

Usage
The Adventure Mode Control Block will execute server commands like giving items or experience to a player.

History
On July 27th, 2012, Jeb began tweeting of a new block he had created to start expanding Adventure mode. He began posting pictures, ideas and hints of what the block will be able to.