I think I've worked out what it is -
Nothing Original. By the way - spoilers ahead. In no particular order:
Phoenix? Done - lots.
Earth as an egg for some celestial force? spoilers:
end of spoilers
Earth X, anyone?
An enemy distracting Wolverine with a startling revelation? Anyone remember Bendis' run?
Storm using lightning to take out an enemy during a fight featuring her and Wolverine? Wasn't that Vaughn?
Cloning Wolverine? Do I need to say X-23?
Jean Grey goes on a psychic visit to someone lying in a coma in an attempt to wake them? Northstar.
X-Men vs. Academy of Tomorrow, then the Brotherhood? Magnetic North.
Professor X vs. Phoenix 1 on 1 match? X-Men 3.