Flying Blade

Ranged attack
At-Will
Special: 

You must use a small bladed weapon with this attack.

Target: 
One nearby creature
Attack: 
Dexterity + Level vs. AC
Hit: 
WEAPON + Dexterity damage, and if your natural attack roll is even and one of your allies is engaged with the target, you can use your Sneak Attack damage for the round.
Miss: 
Damage equal to your level.
Adventurer Feat: 

If you score a critical hit with flying blade, the target is also dazed (–4 attack) until the end of your next turn.

Champion Feat: 

As long as one of your allies is engaged with the target, your flying blade attack rolls no longer need to be even to add your Sneak Attack damage.

Epic Feat: 

You can use flying blade with any ranged weapon.