Deep Magic Volume 2 (p.230)
Tongue Pick
1-level Transmutation
Casting Time: 1 bonus action
Range/Area: Touch
Components: Verbal, Somatic, Material
Materials: a small wire
Duration: 1 hour
Damage/Effect: Utility
The tongue of a creature you touch changes into a long and slender—but still fleshy—skeleton key. For the duration, the target can use its transformed tongue to pick locks and disarm traps as if its tongue was a set of thieves’ tools. The target is proficient in using its tongue in this way.
At higher levels: When you cast this spell using a spell slot of 4th level or higher, the target doubles its proficiency bonus when using its tongue to pick locks and disarm traps. When you cast this spell using a spell slot of 7th level or higher, the target has advantage on its checks to pick locks and disarm traps with its tongue.
Available for: Bard, Sorcerer, Warlock, Wizard