Hmm... perhaps the intention of Nimble Strike is to allow the Ranger to use it while one square away from the enemy, shifting adjacent to them to gain +1 to their attack roll from Prime Shot and then attacking.
If using the power is what provokes...
And the ranger is one square away from the enemy when he uses the power...
Then shifting next to the target and firing their shot should not provoke.
Twin Strike would still be much better though.
If using the power is what provokes...
And the ranger is one square away from the enemy when he uses the power...
Then shifting next to the target and firing their shot should not provoke.
Twin Strike would still be much better though.