Dual Imbue Weapon

You touch a non magical weapon and imbue it weight the power of two different magical forces. Chooses two of the following damage types: acid, cold, fire, lightning, necrotic, poison or radiant.
    For the duration of this spell, the weapon becomes a magic weapon and deals an extra 1d4 damage of both chosen types when it hits (rolled separately). You can change your two chosen damage types using a bonus action if the weapon within 30 feet of you.