The Sunfury in an inventory slot.
The Sunfury is one of the three flails in Terraria. It is a rare drop from the Bone Serpent and it cannot be crafted. It is also the strongest of the three flails, dealing 33 damage. The Sunfury is very good at clearing out large groups of enemies at once. It is also useful when dealing with burrowing enemies, bosses, and mini bosses.