Deep Magic Volume 1
Ears of the Bat
3-level Transmutation
Casting Time: 1 action
Range/Area: Self
Components: Verbal, Somatic, Material
Materials: a bit of bat fur
Duration: Concentration, 1 hour
Damage/Effect: Buff
You gain the keen hearing and echolocation abilities of a bat. For the duration of the spell, you have advantage on Wisdom (Perception) checks that rely on hearing, and you gain blindsight out to a range of 60 feet. You cannot use the blindsight ability while deafened. While the spell is in effect, you have disadvantage on saving throws against spells and effects that deal thunder damage.
Available for: Druid, Warlock