Once an enemy is on the ground, your wolf companion excels at keeping it there.

Encounter   ✦     Beast, Martial
Immediate Reaction      Personal

Trigger: You take damage from a melee attack.

Prerequisite: You must have a wolf beast companion

Requirement: Your beast companion must be adjacent to the triggering enemy and able to make opportunity attacks.

Effect: The triggering enemy is knocked prone and cannot stand up until it begins a move action not adjacent to your beast companion.

Published in Dragon Magazine 392.