Bottle Laboratory. The bottle which the soul homunculus calls home cannot be broken or destroyed while the creator of the construct is alive.   Grow/Shrink. When entering or leaving the bottle laboratory it calls home, the soul homunculus changes size. When entering the bottle, it shrinks down to one half of its normal height. When leaving the bottle, it resumes its normal size and appears in an unoccupied space adjacent to the bottle, or in a space occupied by its master (if the master is within 120 feet).   Sustaining Bond. As long as its creator is alive, the soul homunculus does not need to eat, sleep, breathe, or drink (though it likes to do all of those things as often as its creator does) and it regains 1 hit point at the start of its turn. If it takes fire damage, it doesn’t regain the hit point at the start of its next turn.