With a flurry of taps, shoves, and nudges, you push past your foe, leaving it flustered.

Encounter
Move Action      Melee 1

Target: One creature

Effect: You move your speed through the target's space to a square adjacent to it. This movement does not provoke an opportunity attack from the target. In addition, the target takes a –2 penalty to attack rolls until the start of your next turn.

Published in Player's Handbook 3, page(s) 176.