The Crimson Fury

Weapon Rare (this item requires attunement) [magic]

     

Vengeful anger

  A paladin of the evil alignment they gain 1d8 extra to their divine smite and the divine smite damage type becomes necrotic  

Wrath of the Crimson Dragons

  Upon landing a critical hit all, all creatures of the users choice that they can see and are aware of within 30ft must succeed on a dc 15 wisdom saving throw or be frightened for 1 minute, creatures can reattempt the saving throw on the end of their turn.