Crystal Barrier

Call upon the power of the earth to cause a wall of crystal to erupt in a 40ft line in front of you, dealing 3d6 piercing damage to any creatures in its area.

Additionally, wherever a creature is not hit, temporary half cover is summoned. This half cover is destroyed when a creature targets it, or fails to hit a creature behind it.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d6 for each slot level above 2nd