Racnar looked at Pearl, with a very saddened look on his face. - "I am his blood... but he is not my dad, my dad is my step-father, my herd's current leader and the one that cares for all of us... Chomper knows him.... I have never met my real father: Greyclaw, but Cayso has.. that's why... I am so worried." - Racnar then turned his head away from them. - "I never wanted... to keep this from you... but I wasn't sure who was the intruder until... some... moments ago." - After that, the kid collapses, grabbing his chest again as it is obvious that the pain in getting unbearable.
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As Greyclaw fell back after Longtail could block his attack replied - "I can recognize the same arrogance in you, I thought you were different, someone WORTHY!" - the Intruder gave a very loud screech of anger, strong enough to make the whole cave and island to shake, he then joined his hands to make a double fist and hitted the land, making a breach in direction of Longtail, breaking a hole below the Flyer and from there two very big jaws emerged, trying to swallow Longtail.
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At the moment, the black fog was still covering Cayso, as the kid still hears the voice of his father - "My son, someday you'll get to understand why I have to do this. But no matter how this will end, do not let anger to consume you, as it consumed me in a quest for revenge... because too many things will depend on you and will depend on your opposite." - As the voice was talking, Cayso was transmiting the message from the start to Redclaw and Kai, so they'll get to know too.