Rending Chains Grappler [Greater Style]

Heroic Tier
Prerequisite: Fighter, Rending Chains Student feat
Benefit: When you are attacking with a flail and you have proficiency with that weapon, you gain the following two benefits.
Whenever you hit an enemy with a martial power, it takes damage equal to your Dexterity modifier if it shifts before the end of your next turn.
When you hit an enemy with a power associated with this feat, that enemy is slowed until the end of your next turn.

Published in Martial Power 2, page(s) 128.