Ultra weapons

Ultra weapons: Very few ultra weapons have ever been seen, because they are the most powerful weapons ever made, even able to kill gods in just a few blows. Only 2 are confirmed to exist, and they are currently hidden from all knowledge. The gods will do anything to hide them, even the chaotic ones. Once wielded, they always hit unless the attack roll is a natural 1, and deal 10d100 slashing damage that overcomes all resistances and immunities.