Investiture of Sand (5e Spell)

Until the spell ends, sand whirls a round you, and you gain the following benefits:

Ranged weapon attacks made against you have disadvantage on the attack roll.
You can move across difficult terrain created by dirt or sand without spending extra movement. Your vision is unobscured by dirt or sand, and you can breathe dirt or sand as if it were air. You can walk on quicksand as if were solid ground. You are immune to damage from spells that create sand or dirt which deal damage, such as the sandblast spell.
You can use your action to create a line of sand 15 feet long and 5 feet wide extending from you in a direction you choose. Each creature in the line must make a Dexterity saving throw. On a failed save, a creature takes 4d8 bludgeoning damage and is blinded and unable to speak until the end of your next turn. On a successful save, a creature takes half damage and isn't blinded or unable to speak.