50K Sword

50K sword is the most recent sword of the game.You could get it by defeating the 50K boss. See infobox for information.First you need to somehow get through the invisible boss/item, after that you will get teleported and have to touch the rainbow hammer. You will get teleported to the 50K Boss and you will have to defeat it (very very very hard, it will take something like 20h with overseer sword)