This spell is targeted via the Innate Attack (Beam) Skill.

Prismatic Spray [436] 
    Red [14.85] 
        Innate Attack (Cutting) 10 HP [39] 
        Innate Attack (Cutting) 10 HP [35.25] 
            Resistible (HT) [-25%] 
        Vision-Based [+150%] 
        Reduced Range (x1/10) [-30%] 
        Alternate Attack [x1/5] 
    Orange [29.7] 
        Innate Attack (Burning) 20 HP [78] 
        Innate Attack (Burning) 20 HP [70.5] 
            Resistible (HT) [-25%] 
        Vision-Based [+150%] 
        Reduced Range (x1/10) [-30%] 
        Alternate Attack [x1/5] 
    Yellow [297] 
        Innate Attack (Crushing) 40 HP [156] 
        Innate Attack (Crushing) 40 HP [141] 
            Resistible (HT) [-25%] 
        Vision-Based [+150%] 
        Reduced Range (x1/10) [-30%] 
    Green [24.16] 
        Affliction [56] 
            Heart Attack [+300%] 
        Innate Attack (Toxic) 20 HP [64.8] 
        Vision-Based [+150%] 
        Link [+10%] 
        Reduced Range (x1/10) [-30%] 
        Alternate Attack [x1/5] 
    Blue [11.2] 
        Affliction [56] 
            Petrification [+300%] 
            Vision-Based [+150%] 
        Reduced Range (x1/10) [-30%] 
        Alternate Attack [x1/5] 
    Indigo [32.2] 
        Terror (Confusion) 20 [161] 
            Active [+0%] 
            Weaponized (No help from DR) [-50%] 
            Vision-Based [-20%] 
        Alternate Attack [x1/5] 
    Violet [26.2] 
        Affliction [131] 
            Advantage [+1200%] 
                Jumper [120] 
                    Interplanar Only [+0%] 
                    Extra Carrying Capacity (Extra-Heavy) [+50%] 
                    Uncontrollable [-30%] 
                        Sent to a random plane 
        Reduced Range (x1/10) [-30%] 
        Alternate Attack [x1/5] 
    Cone 5 [+100%] 
    Uncontrollable [-30%] 
        Randomly determine which color hits each target 
    Magical [-10%] 
    Spell Components [-20%] 
        Must say "color" in Latin 
        Must gesture with hands