Anarchic Weapon

Weapon (any weapon), rare

You gain a +1 bonus to attack and damage rolls made with this weapon. When you hit a lawful celestial, dragon, fiend, or undead with it, that creature takes an extra 2d6 psychic damage. (At the Gm’s discretion, certain particularly lawful creatures such as paladins might take this damage even if they have a different creature type.) Ankh of Justice

Weapon (greatsword), rare (requires attunement by a devout worshiper of Lothian)

This axiomatic greatsword has an ankh-shaped hilt. If you are slain while holding the sword, it brings you back to life (if you are willing) with a true resurrection spell; this happens immediately on the same round you are killed.

Once the sword raises you from the dead, it can never do so again.

Anarchic weapons are usually crafted with icons, runes, or symbols from a chaotic-aligned deity, chaos cult, or other organization that actively wants to promote chaos and destruction.