You hurl a 4-inch-diameter sphere of energy at a creature within range. You choose acid, cold, fire, lightning, poison, or thunder for the type of orb you create, and then make a spell attack against the target. If the attack hits, the target takes 2d10 damage of the type you chose.

If you roll a 15 or higher on the d20, the orb erupts and all creatures within a 5-foot-radius of the target must also make a Dexterity saving throw or take 2d10 damage of the type you chose.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, both instances of the damage increases by 1d10 for each slot level above 1st.