Caiaphas rolled his eyes, and finished reloading, dodging the bolts with near contemptuous ease, and put the first shot into the slowly staggering forward undead, finishing it. He knew about negative energy healing the creatures and wanted it destroyed before the necromancer snuck a shot into it to heal it and let it flank him. He danced about the roof, carefully considering his options, before deciding to just go with it, and grabbed a sizable portion of his available magic energy, shaped it into something resembling a healing spell, and then flung it into the sky, directly into the dragon's chest. He hoped he could figure this out on the fly, but he should be able to reverse the energy if he fouled up too badly. Once the spell hit, he kept an eye on the necro, more to avoid any green bolts, already being at super human speeds made dodging more a matter of twitching than frantically throwing himself out of the way, and twisted the energies as he had been shown. As the skeleton began to dissolve, he grabbed the remaining mass, and put an image of the blue in his head, as he suspected it had looked in life, and began to rebuild it piece by careful piece, even as the neck under the necro suddenly gave way. Heart, lungs, liver, intestines, stomach, kidneys, everything a living creature needed to survive, including the all important energy organ that he had seen in the white while taking it apart was included.