Holy Water

As an action, you can splash the contents of this
flask onto a creature within 5 feet of you or
throw it up to 20 feet, shattering it on impact. In
either case, make a ranged attack against a target
creature, treating the holy water as an
improvised weapon. If the target is a fiend or
undead, it takes 2d6 radiant damage.
A cleric or paladin may create holy water with an
hour-long ritual which consumes a 1st-level spell
slot and 25 gp worth of powdered silver.