Ranged Flanker

You can use allies to your full advantage, catching their opponents when they're distracted.

Prerequisite: Precise Shot

Benefit: When attacking with a thrown weapon, you can gain the benefits of flanking against targets within 30 ft. 

While making your attack, your weapon counts as a reach weapon with 30 ft reach. Because you only count as flanking during your attack, this does not grant allies a flanking bonus on their turn.