Chromatic Bullet

The next time you hit a creature with a ranged weapon attack using a firearm during the spell’s duration, your bullet sparks with elemental energy. The attack deals an extra 2d4 damage to the target.

You choose whether this additional damage is acid, cold, fire, lightning, poison, or thunder damage, and you can choose to change the firearm’s damage to one of these damage types. You do not need to pick the same damage type for both.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 2d4 for each slot level above 1st.