Elemental Strike

Your hand bursts into an element you choose Fire/Lighting/Acid/Cold/Poison.

Until this spell ends, your unarmed attacks deal 4d6 extra damage of the chosen element, and half to enemy creatures within 15ft.

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