Lance of Michael (5e Equipment)

Weapon (lance), legendary (requires attunement)

It is said this weapon was once used the archangel, Michael, to slay Lucifer and demonic princes. You have a +2 bonus to attack and damage rolls made with this magic lance.
When you hit a celestial with this lance, the weapon deals an extra 2d6 necrotic damage, and the damage from your attack ignores any damage resistance or immunity. At the start of the creature's next turn, it must succeed on a DC 17 Constitution saving throw or be stunned until the end of its turn as it coughs up black liquid. If a celestial succeeds on this saving throw, it automatically succeeds on this saving throw for the next 24 hours.
When you hit a fiend with this lance, the weapon deals an extra 3d6 radiant damage. If this damage reduces the target to 0 hit points, it is utterly destroyed, and does not benefit from any features which would normally trigger when it dies or is reduced to 0 hit points.
An utterly destroyed fiend and everything it is wearing and carrying, except magic items, ceases to exist. The creature can be restored to life only by means of a true resurrection or a wish spell.