Elemental Weapon

Casting Time: 1 action
Range: Touch
Duration: Concentration, up to 1 hour
A nonmagical weapon you touch becomes a
magic weapon. Choose one of the following
damage types: acid, cold, fire, lightning, or
thunder. For the duration, the weapon has a +1
bonus to attack rolls and deals an extra 1d4
damage of the chosen type when it hits.
See PHB pg. 237.