Feat UtilityCutthroat's Scrutiny
Studying your opponent, you search for a weakness you can take advantage of.
Minor Action Ranged sight
Target: One creature you can see
Effect: The target grants combat advantage to you until the end of your next turn. During this time, you score a critical hit against the target on a natural roll of 19 or 20.
Published in Dragon Magazine 373, page(s) 14.