Abel would shake his head a touch as this was foolhardy for a majority of reasons. Sure there was monsters there but there could also be people and other animals that might not want them dead. Not to mention they would have to wait for the blaze to die down which mean that they were wide open for others. They could easily be mistaken for villains themselves and that was if they could even get the wet swamp and marshes to burn. So with all that morally and practical objection he once again shook his head placing his hand upon Derrick's shoulder showing that he didn't approve of this. He would rather take his chances moving to the mountains. There was a possibility that four could avoid the dangerous village of monsters somehow. He points his sword to the mountains instead to indicate his suggestions. He was also serving as a distraction inadvertently for Lisa's nose to be tickled.