Artificer's Clamp

A brass clamp with a precious gem or runic markings. Clamps around a simple or martial weapon. Giving it temporary magic effects.

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.

At higher level

When you cast this spell using a spell slot of 5th or 6th level, the bonus to attack rolls increases to +2 and the extra damage increases to 2d4.
When you use a spell slot of 7th level or higher, the bonus increases to +3 and the extra damage increases to 3d4.

Notes: Damage: Acid, Damage: Cold, Damage: Fire, Damage: Lightning, Damage: Thunder