Demonic knife

The Demonic knife is a magical knife that was created specifically to kill demons. The demonic knife has existed for decades, being utilized by hunters, agents and even other supernatural creatures alike.

Effects
This knife is capable of killing all but very powerful demons with a single stab to a vital area, such as the chest or the neck of the demons' vessels. Those killed by the knife briefly glow with orange light, which flickers out as the demon dies. Even non-lethal cuts are excruciatingly painful for demons.

Immunity
Although it can kill demons, the first, oldest and most powerful type of demon, Demonic lords, are immune to the effects of the knife. The knife does however inflict pain, but does not kill them like it does with other demons.