So there are several ways to ressurect people in the Marvel Universe - for the purposes of this thread we will exclude the Phoenix Force due to it's convoluted history
Method 1 the Cosmic cube Frost possesses a piece of it and one of it's abilities is reality warping.
Method 2 Breaker World Technology - Cyclops already died and came back all the machine req
Requires is 5 souls
Method 3 The Red Queen - it would be very unlikely given her history with Cyclops but she did possess the magical power to ressurect.