Magic‎ > ‎Spells (Paizo)‎ > ‎F‎ > ‎

    Flame Arrow

    School transmutation [fire]; Level magus 3, sorcerer/wizard 3


    Casting Time 1 standard action
    Components V, S, M (a drop of oil and a small piece of flint)


    Range close (25 ft. + 5 ft./2 levels)
    Target fifty projectiles, all of which must be together at the time of casting
    Duration 10 min./level
    Saving Throw none; Spell Resistance no

    By the way...
    This spell can start fires on a ship.

    Source Skull & Shackles Player's Guide

    Do bonus dice from Channel Smite or spells such as elemental touch or flame arrow multiply on a critical hit?
    No. See Multiplying Damage: "Exception: Extra damage dice over and above a weapon’s normal damage are never multiplied." The general rule is the only dice you multiply on a critical hit are the actual dice from the basic weapon (d8 for a longsword, 2d6 for a greatsword, and so on).