Cain's method was actually simple, as he would announce that anyone who wanted to meet him as the seller must bring a gift of either phoenix blood essence or ice dragon essence.
He was confident that at least a few of them would later present these items to him as a "gift."
There was even the possibility that their quality might exceed his expectations, considering they would likely assume the mysterious seller was very powerful and therefore wouldn't need low-quality blood essences.
That was why, when Cain noticed Nix wanted to burn his blood essence, he didn't stop him—he had already thought of backup plans in case he needed to find ice dragon blood essence.
Once the pill he had given to Little White took effect, restoring him fully, Cain decided to upgrade Little White's rank since he couldn't wait for him to become a Conqueror Rank Beast.
"System, upgrade Little White's rank to Conqueror Rank Beast!" Cain ordered.