This is targeted using the Bow Skill. The lightning potion of this spell can occasionally Overpenetrate (see p. B408).

Flame Arrow [48] 
    Innate Attack (Impaling) 1d [12.8] 
        ST-Based (Thrust) [+100%] 
    Innate Attack (Tight-Beam Burning) 2d [35] 
        Follow-Up [+100%] 
        Surge, Arcing [+100%] 
        Side-Effect (Stunning) [+50%] 
    Magical [-10%] 
    Spell Components [-30%] 
        Must say "lightning arrow" in Latin 
        Must rub a amber ($25)/crystal ($3)/glass ($1) rod on fur ($0.10) 
Level 2 [53] 
    Add Extended Duration (x3) [+20%] 
        Caster retains ability for 3 seconds 
Levels 3-7 [55/59/63/66/70] 
    Increase Extended by 1 step [+20%]