Dirt Rod

The Dirt Rod can be purchased from the Dryad. It can move dirt blocks around and its range is only limited by the screen. The dirt rod is an extremely versatile cavern exploration tool. Players can wall themselves in away from danger and use the dirt rod to rearrange the area. This may include walling passages off, bridging lava pools, or building dirt 'pipes' for use in Obsidian production. It is also possible to have a block of sand falling onto the block being moved. This triggers a bug which deals constant (but weak) damage to any monster touching the dirt block. Placing the dirt block in this state will result in the dirt simply being placed as normal while the sand gets duped and either falls straight down or "flies" one block left or right before falling down like it normally would. This is probably due to a bug and is reported to not work as told in multiplayer.

The Dirt Rod can be used as a trigger in a pitfall trap, some of then use "chains" of Torches and blocks of sand for trying to "suffocate" monsters or other players. The loooong range of the Rod allows to trigger the trap by removing the Dirt block otherwise than mining the block from close range