George Lucas Conference Final: Chapter XXV

Magneto is being barraged by a cavalcade of psionic blasts from Vulcan.  He is able to deflect a majority of the strikes by an immense shield created by the metal surrounding the scene.  While Vulcan focuses on Magneto, Adam Warlock covertly flies to the battle.  Warlock manipulates the energy around the zone and shoots an intense attack at Vulcan.  Vulcan catches the ray and deflects it back at Warlock while at the same time holding Magneto at bay. 

Infuriated by the lack of damage caused by his powers, Warlock calls upon the limits of his being and bombards Vulcan with a chaotic cosmic crescendo.  Once again, Vulcan deflects the immense onslaught, but this time focused at Magneto, shredding his metallic shield apart and knocking the Master of Magnetism down.  Given the opening, Vulcan begins to quickly siphon the powers of Warlock and combines them with his own to strike at a weakened Magneto.  Vulcan accomplishes an almost impossible feat by destroying Magneto through the use of his newly combined powers. 

Nonetheless, using these heightened powers to kill Magneto also had a cost of weakening Vulcan.  A lessened, but still extremely powerful Adam Warlock sacrifices himself by overloading his powers.  He knows that even if he dies, a cocoon will revive him at a later time.  Thus, Adam Warlock destroys both himself and Vulcan.