Holy Avenger

You gain a +3 bonus to attack and damage rolls made with this magic weapon. When
you hit a fiend or an undead with it, that creature takes an extra 2d10 radiant damage.
While you hold the drawn sword, it creates
an aura in a 10-foot radius around you. You
and all creatures friendly to you in the aura
have advantage on saving throws against
spells and other magical effects.