Aragonite wave

A wave of red and white hexagonal crystals erupt from the ground in a 15-foot cone, the affected area becomes difficult terrain, and each creature in the cone must make a dexterity save of spell save DC or take 2d6 damage (half on a save).

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