Blood Trail

As you begin this curse you choose a creature within range that you can see and mystically mark it for death. The target than must succeed on a Wisdom saving throw or be cursed for the duration of the spell. The first time that the cursed target takes piercing damage, the target takes an additional 1d8 piercing damage and will begin to bleed a trail that will not stop until the curse is dispelled. As long as they bleed by the Blood Trail curse, you and creatures that are magically under your servitude, gain a +5 bonus to Wisdom (Perception) or Wisdom (Survival) check that relies on smell or sight to find it, and the target will take 1d8 additional piecing damage every 10 minutes as well as when the curse's duration ends, 

A creature that benefits from the Keen Sight or Keen Smell feature, gains an additional bonus to their Wisdom (Perception) and Wisdom (Survival) checks that they make to find the afflicted target, equal to your proficiency bonus.

A target that cannot bleed, or is immune to piercing damage, is not effected by this spell. This effect can be removed from a creature with spells such as dispel magic, remove curse, greater restoration, or other abilities that can remove curses. 

This Spell can be cast via the bestow curse at the same level, at the DM's discretion.

At Higher Levels. If you cast this spell using a spell slot of 3rd level or higher, the duration is concentration, up to 1 hour. If you use a spell slot of 5th level or higher, the duration is 8 hours. If you use a spell slot of 7th level or higher, the duration is 24 hours. If you use a 9th level spell slot, the spell lasts until it is dispelled. Using a spell slot of 5th level or higher grants a duration that doesn't require concentration.