The Shadow Longsword is the only longsword added by the Nether Expansion idea pack. It is made by putting two Shadow Fragments above an Assassin's Knife or by putting one Shadow Fragment above a Shadow Sword in a crafting grid. The Shadow Longsword does damage and has a few abilities.
- The Shadow Longsword has 1/3 more range than the Shadow Sword.
- When right-clicked, the player will teleport a maximum of 32 blocks. They cannot teleport through solid obstacles.
- When shift-right-clicked, it will give the player Invisibility for 15 seconds. This depletes durability.