The Redstone Sword is a fairly weak weapon added by the More Swords idea pack. It has two special abilities, however.
- When placed (right-click on the ground) it will provide a redstone signal to all blocks touching it. Remove it by right-clicking.
- When right-clicked, a redstone pulse is sent from the player's location in a 10-block radius. This can be used to activate traps easily before the player hits them.