Bloodhound

You analyze any splatter of blood no older than 24 hours, allowing you to track the creature that shed it. As long as the creature is within 150 feet of you, you can sense their direction and distance from you. You can track them even through obstacles or barriers, as long as they are not completely hidden from you. The spell does not reveal the creature's exact location or outline, but allows you to sense their presence and movement. The spell ends early if the concentration is broken or the analyzed blood becomes older than 24 hours.

At Higher Levels: Your concentration can last longer with a spell slot of level 2 (up to 4 hours), 3 (up to 12 hours), 4+ (up to 24 hours).