Blood Analysis

You place your hand upon spilt blood and magically analyse it, learning what species of creature the blood is from and how long ago it this blood was spilt. 

If the blood is dry, you can make a DC10 Medecine check (with advantage) to gain information about the creature, such as its age, class (if applicable), alignment, etc. 

If the blood is fresh, you automatically acquire this knowledge upon analysing the blood, and.may make a DC15 Medecine check (with advantage) to see the creature's memories leading up to this blood being spilt.