Artifact 19 is an unusual, high-tech weapon featured in Thing-Thing Arena 3. It somewhat resembles a futuristic handgun with a submachine gun-style foregrip at the front, along with a greenish-yellow coloration. When fired, it launches a purple, lightning-like bolt of destructive energy at the closest enemy. The ammo automatically recharges, and you can hold two other weapons with it, so it seems you can't lose it. You start the round with it, if you have unlocked it.