Bloodhound 2014

1st-level transmutation

Casting time: 1 action
Range: Touch
Components: V, S, M (a drop of ammonia)
Duration: 8 hours
Classes: Druid, Ranger, Sorcerer, Wizard

You touch a willing creature to grant it an enhanced sense of smell. For the duration, that creature has advantage on Wisdom (Perception) checks that rely on smell and Wisdom (Survival) checks to follow tracks.

At higher levels

When you cast this spell using a 3rd-level spell slot, you also grant the target blindsight out to a range of 30 feet for the duration.

Source: Deep Magic for 5th Edition (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details