When applying the Bouncing Spell Feat ( http://paizo.com/pathfinderRPG/prd/advanced/advancedFeats.html#bouncing-spe ll ) to the Thorn Javelin Spell ( http://paizo.com/pathfinderRPG/prd/advancedClassGuide/spells/thornJavelin.h tml# ), which occurs?
1. If a Dispel Effect is in effect, another viable target (ie your familiar) has an attempt to have the spell cast on them instead. This means you would have to have your familiar pass you the javelins so you can throw them (apply appropriate penalties in the mean time).
2. When making the ranged attack against a target, if the attack fails, you may make a second attack against another valid target. GM could rule that the target would have to be in the same flight path as the initial target, or have the thorn "bounce" off the initial target and strike at a target within 5'.
3. It does nothing, because the sickening effect of the spell can't find another valid target.