mon->type = MONS_SPECTRAL_THING;
        mon->base_monster = soul_type;

    // Recreate the monster as an abomination or spectral thing.

    // Recreate the monster as an abomination, or as itself before
    // turning it into a spectral thing below.

    mon->flags |= MF_ENSLAVED_SOUL;

    mon->flags |= MF_ENSLAVED_SOUL;

        // Give spectral things the same speed as the original monster.
        mon->speed = mons_class_speed(mon->base_monster);

        // Turn the monster into a spectral thing, minus the usual
        // adjustments for zombified monsters.
        mon->type = MONS_SPECTRAL_THING;
        mon->base_monster = soul_type;

        // Re-equip spectral things.

        // Re-equip the spectral thing.