Name: Infinity Blade
Lore: It has unspeakable power.
Enchantment: Knockback V and Unbreaking III
The enchantments seem crazy, but the weapon is not as powerful as it seems. While it does enough damage to two shot a zombie, it also knocks them away 15 blocks making it not very efficient at killing. I think the weapon would be used as a way to disengage from a fight. For example, If you were fighting someone and you were low on health, you could smack them with this and send them flying far enough for you to use a healing potion before they could engage again. It could also be used to engage something If they are somewhat close to a cliff. I think a good price would be 80k because it's a very good pvp weapon, but it's not really good for much else.