Part of Onyx heard and understood the warning the creature was giving, the creatures he was referring to were certainly very advanced compared to the types of Relics her tribe had been able to restore. It did remain possible, however, that the creature could be delusional from the long-term affects of dehydration and separation anxiety. The other part of Onyx, the part that still believed that she shouldn't have been talking to the creature in the first place, only heard a challenge in the creature's words. 

"You believe that no one may stand up to them and survive? Obviously, you have never met an Elissic before!" She was about to charge at the creature, aiming to push it into the water, when she noticed and remembered the creature's powerful relic, which it was now holding by the barrel at its side. Implementing her new plan, she quickly flew up into the air and out of view. Maneuvering quickly, she managed to get behind the creature and snatch the relic from it before it had realized where she was. 

"I hope you can swim, creature!" She said darkly as she pushed it into the dark water, causing a large splash of salt-water that Onyx dodged easily in the air.