Shadowshot

The Shadowshot is an ancient crossbow imbued with the power of 115. It fires its dark arrows in bursts of three and they deal a very large amount of damage, and any enemy that doesn't die will be permanently poisoned until they do. It is a specialist weapon earnable in the Black Ops III remaster of L.U.N.A.R., included with Zombies Archives. Halfway through the story easter egg it is upgraded to the Ebon Shadowshot, which increasing the damage further and reduces the recharge time.