if (you.duration[DUR_HASTE] && !you.duration[DUR_BERSERKER] && random2(10) < 6)

    if (you.duration[DUR_HASTE] && !you.duration[DUR_BERSERKER]
        && random2(10) < 6)
    {

    }

    // randarts are usually about 20x worse than running around invisible
    // or hasted.. this seems OK.
    added_contamination += random2(1 + scan_randarts(RAP_MUTAGENIC));

    if (const int randart_glow = scan_randarts(RAP_MUTAGENIC))
    {
        // Reduced randart glow. Note that one randart will contribute
        // 2 - 5 units of glow to randart_glow. A randart with a mutagen
        // index of 2 does about 0.58 points of contamination per turn.
        // A randart with a mutagen index of 5 does about 0.7 points of
        // contamination per turn.
        
        const int mean_glow   = 500 + randart_glow * 40;
        const int actual_glow = mean_glow / 2 + random2(mean_glow);
        added_contamination += div_rand_round(actual_glow, 1000);
    }