Blacktongue is a unique Bastard Sword from Diablo II: Lord of Destruction. Although its damage may seem lower compared to other unique swords of its level, Blacktongue's strength lies in its added Poison damage. Blacktongue also prevents Monster Heal. This is particularly useful in later difficulties such as Hell Difficulty, when Monster Heal can be an incredible pain. However, whether or not Blacktongue's damage is still effective in later difficulties, and whether or not its targets are immune to poison, may limit its usage.