std::vector<int> inv_items;
    for (int i = 0; i < ENDOFPACK; i++)
    {
        const item_def &item(you.inv[i]);
        if (is_valid_item(item) && !item_is_equipped(item)
            && !item_is_critical(item))
        {
            inv_items.push_back(i);
        }
    }

    if (in_view[DNGN_CLEAR_ROCK_WALL] || in_view[DNGN_CLEAR_STONE_WALL]
        || in_view[DNGN_CLEAR_PERMAROCK_WALL])
    {
        messages.push_back("Dim shapes swim through the translucent wall.");
    }
    if (in_view[DNGN_GREEN_CRYSTAL_WALL])
        messages.push_back("Dim shapes swim through the green crystal wall.");
    if (in_view[DNGN_METAL_WALL])
        messages.push_back("Tendrils of electricity crawl over the metal "
                           "wall!");

        else if (feat == DNGN_FLOOR)
        {
            messages.push_back("The floor shifts under you alarmingly!");
            messages.push_back("The floor vibrates.");
        }

    if (!grid_destroys_items(feat) && !grid_is_solid(feat))

    if (!grid_destroys_items(feat) && !grid_is_solid(feat)
        && inv_items.size() > 0)

        int count = 0;
        int idx   = -1;

        int idx = inv_items[random2(inv_items.size())];

        for (int i = 0; i < ENDOFPACK; i++)
        {
            const item_def &item(you.inv[i]);
            if (is_valid_item(item) && !item_is_equipped(item)
                && !item_is_critical(item))
            {
                if (one_chance_in(++count))
                    idx = i;
            }
        }
        if (idx != -1)

        const item_def &item(you.inv[idx]);
        std::string name;
        if (item.quantity == 1)
            name = item.name(DESC_CAP_YOUR, false, false, false);
        else

            item_def &item(you.inv[idx]);
            std::string name;
            if (item.quantity == 1)
                name = item.name(DESC_CAP_YOUR, false, false, false);
            else
            {
                name  = "One of ";
                name += item.name(DESC_NOCAP_YOUR, false, false, false);
            }
            messages.push_back(name + " falls out of your pack, then "
                               "immediately jumps back in!");

            name  = "One of ";
            name += item.name(DESC_NOCAP_YOUR, false, false, false);

        messages.push_back(name + " falls out of your pack, then "
                           "immediately jumps back in!");

        messages.push_back("Your eyebrows briefly feel very bushy.");

        messages.push_back("Your eyebrows briefly feel incredibly bushy.");

        str += you.hand_name(true);

        str += you.hand_name(false);

        str += " leaps into the air, briefly spins, then lands on your "
               "head again!";

        str += " leaps into the air, briefly spins, then lands back on "
               "your head!";

            messages.push_back(str);            

            messages.push_back(str);
    }
    ////////
    // Misc.
    if (inv_items.size() > 0)
    {
        int idx = inv_items[random2(inv_items.size())];
        item = &you.inv[idx];
        std::string name = item->name(DESC_CAP_YOUR, false, false, false);
        std::string verb = coinflip() ? "glow" : "vibrate";
        if (item->quantity == 1)
            verb += "s";
        messages.push_back(name + " briefly " + verb + ".");

        if (starts_with(cause, "an "))

        else if (starts_with(cause, "an "))

    beam.pos    = target->pos();

        ASSERT(false);

        DEBUGSTR("Invalid miscast spell discipline.");

    bool plural;

        msg = replace_all(msg, "@hand@",  target->hand_name(false));

        msg = replace_all(msg, "@hand@",  target->hand_name(false, &plural));

        plural = can_plural_hand;

    if (plural)
        msg = replace_all(msg, "@hand_conj@", "");
    else
        msg = replace_all(msg, "@hand_conj@", "s");

            {

                if (you.penance[god] == 0)
                   mpr("God making you miscast, but not under penance.",
                       MSGCH_DIAGNOSTICS);
            }

static bool _has_hair(actor* target)
{
    // Don't bother for monsters.
    if (target->atype() == ACT_MONSTER)
        return (false);
    return (!transform_changed_physiology() && you.species != SP_GHOUL
            && you.species != SP_KENKU && !player_genus(GENPC_DRACONIAN));
}
static std::string _hair_str(actor* target, bool &plural)
{
    ASSERT(target->atype() == ACT_PLAYER);
    if (you.species == SP_MUMMY)
    {
        plural = true;
        return "bandages";
    }
    else
    {
        plural = false;
        return "hair";
    }
}

    int num;

        switch (random2(10))

        num = 10 + (_has_hair(target) ? 1 : 0);
        switch (random2(num))

            break;
        case 10:
        {
            // Player only (for now).
            bool plural;
            std::string hair = _hair_str(target, plural);
            you_msg = make_stringf("Your %s stand%s on end.", hair.c_str(),
                                   plural ? "" : "s");
        }

    int num;

        switch (random2(10))

        num = 10 + (_has_hair(target) ? 1 : 0);
        switch (random2(num))

        case 10:
        {
            // Player only (for now).
            bool plural;
            std::string hair = _hair_str(target, plural);
            you_msg = make_stringf("Your %s momentarily turn%s into snakes!",
                                   hair.c_str(), plural ? "" : "s");

        }

    const dungeon_feature_type feat = grd(you.pos());
    const bool frostable_feat =
        (feat == DNGN_FLOOR || grid_altar_god(feat) != GOD_NO_GOD
         || grid_is_staircase(feat) || grid_is_water(feat));
    const std::string feat_name = (feat == DNGN_FLOOR ? "the " : "") +
        feature_description(you.pos(), false, DESC_NOCAP_THE);
    int num;

        switch (random2(10))

        num = 10 + (frostable_feat ? 1 : 0);
        switch (random2(num))

            you_msg = "Your @hands@ feel numb with cold.";

            you_msg = "Your @hands@ feel@hand_conj@ numb with cold.";

        case 10:
            if (grid_is_water(feat))
                all_msg  = "A thin layer of ice forms on " + feat_name;
            else
                all_msg  = "Frost spreads across " + feat_name;
            break;

static bool _on_floor(actor* target)
{
    return (!you.airborne() && grd(you.pos()) == DNGN_FLOOR);
}

    int num;

        switch (random2(10))

        num = 11 + (_on_floor(target) ? 2 : 0);
        switch (random2(num))

        case 10:
            if (target->cannot_move())
            {
                you_msg      = "You briefly vibrate.";
                mon_msg_seen = "@The_monster@ briefly vibrates.";
            }
            else
            {
                you_msg      = "You momentarily stiffen.";
                mon_msg_seen = "@The_monster@ momentariliy stiffens.";
            }
            break;
        case 11:
            all_msg = "The floor vibrates.";
            break;
        case 12:
            all_msg = "The floor shifts beneath you alarmingly!";
            break;

    int num;

        switch (random2(10))

        num = 10 + (_has_hair(target) ? 1 : 0);
        switch (random2(num))

            break;
        case 10:
        {
            // Player only (for now).
            bool plural;
            std::string hair = _hair_str(target, plural);
            you_msg = make_stringf("Your %s stand%s on end.", hair.c_str(),
                                   plural ? "" : "s");

        }