At the exact moment of impact, Fang's mind was bombarded with a huge array of information. The Elder Council had held true to their promise and supplied him with every bit of information they could gather regarding the Hellwyrm's power base and potential weaknesses. The energy released at Fang was rather harmless. The very nature of Fang's bloodline assured that evil and chaotic energies were rather harmless to him, a factor that he was sure the beast would not have counted on. Black dragons, after all, only had minimal immunity. It was the other half of Fang's bloodline that provided the rest of his protection, and that bloodline had been nearly extinct for the past three-thousand years.
Fang could tell, even without his standard physical senses, that Baros and Asana were beginning to make their move. He also knew that the Hellwyrm was not going to be too cooperative with staying on the ground. With the speed and grace of thousands of years of experience, Fang righted himself in the air after the impact, and immediately let loose with his breath weapon. A blast of energy that looked like a dark green waterfall traveling at near supersonic speed came barreling at the grounded form of the Hellwyrm. Fang chose his natural acidic attack for two reasons. One was that it was faster to prepare, if only by a fraction of a second, than any of his other breath attacks. The other was that while his mind processed the information that came from the other elders, he figured that acid would likely stand the best chance of injuring the creature or at least deepening the hole its impact created. At the very least, the sheer force of the impact should keep the monster down long enough for the humanoids to play out what they had planned.