Python

Yes, that was the meaning behind Thunder and Lightning. Lin Yun clearly remembered the notes detailing the research of the Ascian Dynasty he had seen in the decaying library. Although the Divine Runes weren't perfectly reproduced, some of the important and simple runes were able to be translated, such as the four elements, Water, Fire, Wind, and Earth, or Thunder and Lightning, Light and Darkness, and so on. 

Now, the character on the forehead of the Three-Eyed Secret Wolf was the character for Thunder and Lightning.

But why was it a rune?

Lin Yun thought about it for a while, but he couldn't understand.

The Three-Eyed Secret Wolf was a rare existence, one so mysterious that there was basically nothing written about it. If not for the story of the Mercenary King, there might not have been a proper record of a Three-Eyed Secret Wolf in Noscent.