Elemental infusion

The caster is able to imbue up to two (2) Martial weapons with one (1) of the following elements:

• Cold- The caster breathes over the weapon, Freezing over with a layer of ice. The weapon deals an additional amount of damage equal to the casters Dexterity Modifier + Proficiency Bonus as cold damage.
• Fire- The caster hits the weapons together, causing flames to engulf the weapons, not harming the wielder, but dealing an additional amount of damage equal to the casters Dexterity Modifier + Proficiency Bonus as fire damage.
• Earth- After stabbing or hitting the ground, the blade is now infused with earth. The weapon deals an additional amount of damage equal to the casters Dexterity Modifier + Proficiency Bonus as Bludgeoning damage.
• Wind- The caster waves the weapons in the air in front of them, while breathing towards them. A jet stream of air starts to encircle the weapons.  The weapon deals an additional amount of damage equal to the casters Dexterity Modifier + Proficiency Bonus as force damage.

At higher levels you can imbue one (1) additional element. At 5th level (2 elements), at 11th level (3 elements), and at 17th level (4 elements)