Blood Hound

A white film slips over your vision. Strangely, your eyes
seem more focused and you note barely perceptible traces of
passage that you had missed before.
If you fail a Survival check to track a creature while this
spell functions, you can immediately attempt another roll
against the same DC to reestablish the trail and you can
establish what creature left the trail, and even tell the
difference between each creature of the same type. As well you
gain advantage on perception(scent) checks.