Rachel was contacted by Cyclops who asked her to feed the Avengers false information about the whereabouts of Hope Summers. She agreed and sent the Avengers on wild goose chases across the world. She proceeded to leave the school to join the battle on the side of her fellow mutants against the Avengers. She later helped the X-Men look for Hope with using her telepathy but hope was copying it so that she would not fine her. later when Cyclops went Dark Phoenix she helped both Avengers and X-Men take him down.
Like her mother, Jean Grey, Rachel has powerful telepathic and telekinetic powers. Rachel is an expert Astral combatant. She one of the most powerful telepaths on Earth. Rachel was also for many the host of the all powerful Phoenix Force and possessed powers such as cosmic pyrokinesis, flight and many others.