Tymaeus's Shielding Chrysalis

​You and one willing Medium or smaller creature within reach are enveloped by a silk shell that occupies your space. Until the spell ends, both targets have the Restrained condition and Total Cover against effects outside the shell. ​The shell is an object with AC 13, 15 hit points, and Vulnerability to Fire damage. Any damage that would be dealt to either target is dealt to the shell instead. ​The spell ends early if the shell drops to 0 hit points or if you dismiss it as a Bonus Action. When it ends, the shell shatters, the other creature moves to the nearest unoccupied space of its choice, and you take any remaining damage from the destroying effect, including any damage amplified by the shell's Vulnerability.