Butcher

Weapon (greatsword), legendary ( requires attunement by someone of a non-good alignment)

Butcher is a sword of immense power, given to Agamemnon by the goddess of magic herself. While wielding it, you gain a +4 bonus to attack and damage rolls, as well as a +4 bonus to AC. In addition, it wards you from spells cast using 1st to 3rd level spell slots.