The serpent is a deceptive creature, and it offers its master the same mastery of guile and cunning.

Speed 6Constant Benefits     You gain a +2 bonus to Bluff checks.
     When you shift, you can ignore the difficult terrain in a single square of that movement.
Active BenefitsSerpent’s Startle: Once per encounter as a minor action, all creatures adjacent to your serpent familiar can’t make opportunity attacks until the end of your next turn.

Published in Arcane Power, page(s) 141, Heroes of the Feywild, page(s) 132.