En-magicked Weapon

You touch a non-magical weapon and infuse it with the properties of a single elemental damage type (fire, cold, etc.) that deals an additional amount of damage of that element equal to your Proficiency Bonus on a successful Attack.

In addition to this damage, if the Attack Roll to hit exceeds the target's AC by 8 or more the Attack deals an additional amount of damage of the selected element equal to the Attacker's Proficiency Bonus. This additional extra damage can only occur once per turn.

At Higher Levels: When you cast this spell at 4th level or higher, you may grant this bonus to a magical weapon.