Akama Yama

"With a little trick. A little reminder: I always put a contingency for my stock that I deem problematic." Chief Tobi stepped forward, and he placed his feet on Gray. "This is one such problematic stock. Since the moment I got this one, he has been quite a handful. Just in case there was an attempt at escaping, I created a little contingency plan on his body." 

As chief Tobi talked, he waved his hand over Gray's back and the symbol of a three leaf clover appeared. "This is my great-grandfather's move. It is called... Akama Yama. The demon's recall to home."

The moment chief Gaga heard those words, he had a look of surprise on his face. He was a shaman. And as it was tradition, shaman's tutored shamans. 

In the Aztec empire, chief Tobi's great grand father, chief Shakaban was a very legendary figure. He was the kind that had all other shamans trying to emulate his style and techniques.