Whip Expert [Multiclass]
Prerequisite: Whip Training, 8th level
Benefit: You can swap one 6th-level or higher utility power you know for the whip crack utility power.
Whip CrackFeat Utility
You snap your whip, warning your enemy not to move carelessly.
Encounter ✦ Weapon
Minor Action Personal
Requirement: You must be wielding a whip.
Effect: Until the start of your next turn, when an enemy within your reach takes an action that provokes opportunity attacks from adjacent enemies, it provokes an opportunity attack from you.
Published in Dragon Magazine 368, page(s) 67.