You send your spirit companion to your ally's aid. It flies around your ally's target, making that foe easier for your ally to attack.

Encounter   ✦     Primal, Spirit
Immediate Interrupt      Personal

Trigger: An ally adjacent to your spirit companion makes an attack roll for a ranged or an area attack

Effect: You move your spirit companion to a square adjacent to a target of the attack. The triggering ally gains a +2 power bonus to the attack roll against each target adjacent to your spirit companion.

Published in Primal Power, page(s) 82.