Players can obtain this item either by trading with another player, or by receiving it as a very rare drop from killing Revenants or the Chaos Elemental. When a player is killed with a newly degraded version of this weapon, roughly half of the Grand Exchange market price is dropped instead of the longsword. It's a good method to get a partial refund of the weapon's price as you cannot trade the degraded version. The corrupt dragon longsword does not require completion of the Lost City quest to wield.