Arcane Weapon

1st-level transmutation

Casting Time: 1 bonus action
Range: Self
Components: V, S
Duration: Concentration, up to 1 hour
You channel arcane energy into one simple or martial weapon you’re holding, and choose one damage type: acid, cold, fire, lightning, poison, or thunder. Until the spell ends, you deal an extra 1d6 damage of the chosen type to any target you hit with the weapon. If the weapon isn’t magical, it becomes a magic weapon for the spell’s duration.
As a bonus action, you can change the damage type, choosing from the options above.
At Higher Levels.
When you cast this spell using a spell slot of 3rd level or higher, you can maintain your concentration on the spell for up to 8 hours.

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Artificer Spells