Mercury was probably resurrected off-screen at some point, given how Onslaught attached to people who were resurrected to manipulate them, and we saw...
Defs hope Synch is in this book or another flasgship. Continue that momentum. And keep him away from NYX - he shouldn't have to deal with young adult...
Magneto was probably worried about them, too. But you don't need to warn Storm about the dangers she's already aware of. He wanted Storm to keep her...