case MONS_SHADOW_IMP:

        const char *suffix = (mon == MONS_WHITE_IMP) ? "frigid air" : "flame";

        const char *where = (mon == MONS_SHADOW_IMP) ? "the shadows" :
                            (mon == MONS_WHITE_IMP)  ? "a puff of frigid air"
                                                     : "a puff of flame";

        mprf("A beastly little devil appears in a puff of %s.", suffix);

        mprf("A beastly little devil appears in %s.", where);

    case MONS_SHADOW_IMP:
        mpr("A shadowy apparition takes form in the air.");
        break;

    {
        bool friendly = (random2(pow) > 3);
        const char *prefix = (mon == MONS_VERY_UGLY_THING) ? " very" : "n";
        mprf("A%s ugly thing appears.%s", prefix,
            friendly ? "" : " It doesn't look very happy.");
        if (!friendly)
        {
            beha = BEH_HOSTILE;
            hitting = MHITYOU;
        }
        break;
    }

        const char *what = (mon == MONS_VERY_UGLY_THING) ? " very ugly thing" :
                           (mon == MONS_UGLY_THING)      ? "n ugly thing"
                                                         : " demon";

        mprf("A demon appears!%s",

        mprf("A%s appears.%s", what,