Choked to Death

Eva also did not stay idle as she also helped her Royal Demon Ant Guard doing the work. 

The task was simple, they needed to fill the mouth of the Shiny Headed Rattlesnake's to the brim with the sand available around. 

As they could not damage and kill it with normal means, it was the best alternative that Ban was able to come up with. 

Choke it by filling its throat with a load of sand. 

The reason why the Shiny Headed Rattlesnake hates sand entering its mouth was actually because it's throat has a sticky and slimy substance it uses to swallow its prey whole. 

However, if sand managed to come in contact with that substance, it would immediately dry and become hard after a few moments. 

According to the author of Book of Techniques, 'All About Them!', if one could harvest that same substance over and over again, buildings would become less costly.