Beastly Vise
Ranger Attack 27
Your attack leaves your foe with no idea how to escape its position between you and your beast.
Melee weapon (beast 1)
Target: One creature
Attack: Strength vs. AC
Hit: 3[W] + Strength modifier damage. If you and your beast companion are both flanking the target, the target is immobilized until the start of your next turn.
Beast: If your companion is a boar, a cat, a raptor, a spider, or a wolf, the attack deals extra damage equal to your Wisdom modifier.
Beastly Vise is an encounter power available to rangers at the 27th level.[MP:56]