| Issue | #491 |
| Published | December 2007 |
| Cover Price | 2.99 USD |
| Pages | 44 |
| Editing | Nick Lowe; Will Panzo (Assistant) |
| Notes | Cover sports Endangered Species trade dress. |
| Characters | Storm |
| Genre | superhero |
| Pencils | Salvador Larroca |
| Inks | Salvador Larroca |
| Letters | Typeset |
| Notes | Cover sports Endangered Species trade dress. |
| Genre | superhero |
| Pencils | Billy Tan |
| Inks | Danny Miki |
| Letters | Typeset |
| Characters | FEATURE: X-Men--Professor X; Storm; Beast; Nightcrawler; Warpath; Hepzibah; GUESTS: Caliban; Skids; Leech;Val Cooper; Magneto; VILLAINS: Masque; Erg; Bliss; Litterbug |
| Synopsis | Masque has captured Storm and her allies in the Morlock tunnels and is planning on blowing up a church full of humans to fulfill a prophecy he thinks he has found in a book written by a precog Morlock; Storm has other ideas, escapes and takes care of Masque and his plans; Xavier calls off his hunt for Magneto in the wake of these events; Val meets with Magneto and gives him Qwerty's book of mutant prophecy. |
| Genre | superhero |
| Script | Ed Brubaker |
| Pencils | Salvador Larroca |
| Inks | Salvador Larroca |
| Colors | Jason Keith |
| Letters | Virtual Calligraphy's Joe Caramagna |
| Genre | superhero |
| Pencils | Marc Silvestri |
| Inks | Marc Silvestri |
| Colors | Stjepan Sejic |
| Letters | Typeset |
| Characters | FEATURE: Beast; GUESTS: Dr. Strange; Wong; VILLAIN: Spiral; CAMEO FLASHBACK: Scarlet Witch |
| Synopsis | At the end of his scientific rope in trying to solve the mutant crisis brought about on M-Day, Beast is prompted by Spiral to seek a non-scientific answer; Beast tracks down Dr. Strange who, unfortunately, cannot help him with the mutant dilemma. |
| Genre | superhero |
| Script | Chris Yost |
| Pencils | Andrea Divito |
| Inks | Raul Trevino |
| Colors | Virtual Calligraphy's Joe Caramagna |
| Notes | Cont. from X-Men #203; Cont. in X-Factor #24 |