// 6 out of 7 non-priestly orcs are believers.

    // 1 out of 7 non-priestly orcs are unbelievers.

        if (x_chance_in_y(6, 7))

        if (!one_chance_in(7))

    // Angels and Daevas belong to TSO, but you may find ones adopted by
    // Xom in the Abyss.

    // Angels and Daevas belong to TSO, but 1 out of 7 in the Abyss are
    // adopted by Xom.

        if (mg.level_type != LEVEL_ABYSS || x_chance_in_y(6, 7))

        if (mg.level_type != LEVEL_ABYSS || !one_chance_in(7))