Emerald Sword

Note that this does not exist in Minecraft; it was written purely as a fiction article.

Emerald Swords are the most useful kind of weapon in Minecraft. It can be seen held by Ender Steve in The End. It is the hardest to obtain, as it requires two emeralds to craft, which are the hardest-to-find mineral

Uses
A single Emerald Sword deals two hearts more damage than a Diamond Sword and twice the durability. It can kill most mobs in one hit. Mining Dirt, Sand, and other soft materials goes 1.5x faster. The only mob that can be seen holding it is Ender Steve.