Northstar start seeing something and he shakes his head and he looks again and its not there. The next day he wake up and hears the news about Speed Demon being dead then he starts to think about the black thing he saw. He later sees it again and it point at him and he looks away and look there again and it is gone. The next day he hear about the death of an Young Avengers name Speed he then goes to Quicksilver and talk to him and he said he seen it too Quicksilver said he seen it two days ago and Northstar said that when he said he started seeing it. The Black thing appears again, but they dont see it yet. Quicksilver says bye to Northstar and as soon as he start to leave he falls over dead and Northstar look behind him sees Quicksilver dead with the black thing standing over him and Northstar starts running off and Black Flash chases after him.
I think Northstar is the only character ever to die in 3 seperate comics [X-Men The End, X-Men, AoA 10th Anniversary] all released in the same week. Ouch!