The Bonny Butchering Knife is just one of the hundreds of new weapons added in Elden Ring's absolutely massive DLC, The Shadow of the Erdtree. Compared to a lot of other weapons in this DLC, the Bonny Butchering Knife might look a bit 'plain' visually, and to be honest this is probably one of the DLC's worst examples since it's almost a carbon copy of the Butchering Knife dropped by Anastasia, the Tarnished-Eater in the main game.