X-Men: Phoenix– Endsong (2005)

The Shi’ar resurrect the dormant Phoenix Force prematurely and without a host, in hopes of destroying it. The Phoenix escapes to Earth where it resurrects Jean Grey and forcefully bonds with her again, despite Jean’s pleas that it is “too early.” Written by Greg Pak with art by Greg Land.

Greg Pak said “The biggest new character is actually the Phoenix Force it/herself, whom we’re exploring as a thinking, learning sentient creature with a big and terrifying and moving emotional arc of her own.”