X-MEN #203

As the Xavier Academy reels from Exodus's attack and the Marauders' true goals emerge, As Sinister's new team of Marauders, led by Gambit, seek out the Books Of Destiny, the X-Men make their play to protect this diary of things to come! The X-Men finally find themselves in a position to take the offensive. But as Cannonball and Iceman, who've already survived the arduous first confrontation with their rejuvenated enemies, must now walk into a trap they may not survive...or the X-Men will fail! FEATURING ENDANGERED SPECIES Chapter 13 Beast’s alliance with Dark Beast is put to the test as scientific inquiry turns into cold-blooded murder! — Description from Comic Vine community (comicvine.gamespot.com).