Elemental Fist

You embue your fists with elemental magic in order to empower your melee strikes. For the duration of the spell, you add a 1d6 + your spellcasting modifier of a damage type of either acid, cold, fire, lightning, or thunder to your unarmed melee attacks. You determine the damage type, when you cast the spell.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage dice increases by a 1d6 for each level of the spell above 2nd level.