Deep Magic Volume 2 (p.216)
Rubbery Body
2-level Transmutation
Casting Time: 1 action
Range/Area: Touch
Components: Verbal, Somatic, Material
Materials: a tentacle from a small or smaller aberration
Duration: Concentration, 1 minute
Damage/Effect: Buff
Your touch changes the composition of a willing creature’s flesh to an oily rubber. Until the spell ends, the target has resistance to bludgeoning damage.
At higher levels: When you cast this spell using a spell slot of 5th level or higher, the duration is concentration, up to 1 hour. When you cast this spell using a spell slot of 7th level or higher, the target has immunity to bludgeoning damage until the spell ends instead.
Available for: Sorcerer, Wizard