Blood Drinker

The Blood Drinker is a Hardmode broadsword that is dropped by Blood Zombies and Dripplers during the Blood Moon event after the Wall of Flesh is defeated. Each successful hit stores a blood essence and up to 10 can be stored at the same time. When swung using right-click, it releases a stream of blood at the cost of blood essences stored, which damages enemies and heals allies. The damage and heal amount depend on the amount of stored blood essence.