Crucial Advice
Ranger Utility 2
You are wise in all things. The sooner your friends realize this the safer and better off they'll be.
Ranged 5
Trigger: An ally within range that you can see or hear makes a skill check using a skill in which you're trained.
Effect: Grant the ally the ability to reroll the skill check, with a power bonus equal to your Wisdom modifier.
Crucial Advice is an encounter power available to rangers at 2nd level.[PH:106]