Hellrazor

Longsword
You gain a +1 to attack and damage rolls made
with this magical sword, and you deal an
additional +1 slashing damage to celestials
and fiends. While you are attuned to
this sword, you gain a +1 to ability checks for
Charisma (Deception), Wisdom (Insight),
and Charisma (Persuasion).
Uncommon, Weapon (L-sword) (req Attune)