Detect Bloodline (Remnant)

When you cast this spell, you become aware of any creature that shares a bloodline with the creature whose blood you used for the casting of this spell. The spell tells you the direction and distance to each matching creature, and has a detection limit of miles equal to the amount of HP you spent casting it times 10. 

As this spell's effects are based on the blood you use when casting it, replacing or removing its material component causes it to fail. If running water at least 10 feet wide blocks a direct path between you and the matching creature, the spell can't detect the distance between you and the creature (but it still knows the direction).