Blinding Light

You create a 20-foot-radius sphere of bright radiant light on a point within range. The sphere spreads around corners, and its area is considered heavily obscured. It lasts for the duration or until concentration is broken. The light is so bright that anyone within it is blinded until they leave its radius. If those affected are undead or fiend, the blindness remains until the end of their following turn after they leave the radius.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the radius of the light increases by 20 feet for each slot level above 1st.