Plague Keeper

The Plague Keeper is a craftable post-Moon Lord broadsword and upgrade to the Bee Keeper and Virulence. When swung, it releases a large cloud of plague dust that goes through tiles and can pierce infinitely, spawning 25 bees in its path. The cloud slows down and fades away after a second, reducing its damage by 40% while fading. It also releases 3 bees upon true melee contact with enemies. Bees do not pierce through tiles nor enemies, and deal one-third of the sword's damage.