Blood Sense

You sense the blood flow of all creatures in a 30-foot radius sphere centered on yourself. While you view a creature using blood sense, you have advantage on Wisdom (Medicine) and Wisdom (Insight) checks against them, you know their remaining Hit Points, and they do not benefit from being hidden or invisible. A creature with no blood is unaffected by this spell.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the radius of the sphere increases by 10 feet for each slot level above 2nd.