Alder's Shifting Shroud

You create a small sandstorm with a 15' radius centered on you for the duration of the spell. 

When you cast this spell you can designate creatures up to your spellcasting ability modifier to be unaffected by it. Affected creatures in the area have their movement speed halved. Affected creatures that start their turn within the area must make a CON save or be blinded until the start of their next turn. 

Additionally, once per round when you are hit by an attack, you can reduce the damage taken by 2d6. This doesn't use your reaction, but after this effect is used, you regain it at the end of your turn.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage reduction increases by 2d6 for each slot level above 3rd.