Magic Weapon

2nd-Level Transmutation Spell (Artificer, Paladin, Ranger, Sorcerer, Wizard)

Casting Time: Bonus Action
Range: Touch
Components: V, S
Duration: 1 hour

You touch a nonmagical weapon. Until the spell ends, that weapon becomes a magic weapon with a +1 bonus to attack rolls and damage rolls. The spell ends early if you cast it again.

At Higher Levels: The bonus increases to +2 with a level 3-5 spell slot. The bonus increases to +3 with a level 6+ spell slot.

Source: Player's Handbook, p. 295