Crypt Witherlord Sword

The Crypt Witherlord Sword was an  Dungeon Sword. It was known to be upgraded using Wither Essence and was an upgraded form of the Dreadlord Sword, although the ability worked differently as The Dreadlord Sword's ability at one point had a cooldown. This sword has never been obtainable, but may be added with The Catacombs - Master Mode